Naming Covalent Compounds

A covalent or molecular compound is composed of more than one nonmetal together. 

Naming Molecular Compounds

Concept: Rules for Naming Molecular Compounds

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Video Transcript

Just so that you realize, when we say molecular compounds, another name for them are covalent compounds. Remember that covalent compounds are the connections between nonmetals. The features here are nonmetal and nonmetal together.
Because these nonmetals can arrange themselves in different proportions, we have to use a numerical prefix system in order to describe the numbers of each nonmetal combined in that covalent compound. These are the same numerical prefixes we had to use when we talked about the hydrides.
The rules we're going to say for our nonmetal connected to nonmetal is the first nonmetal is named normally, so we don't change its ending to -ide or anything like that. It's named normally. We're going to say it uses all of the numerical prefixes except mono. We never use mono to describe the first nonmetal in our covalent compound.
We're going to say the second nonmetal keeps its base name and has its ending changed to -ide. The second nonmetal will also use any of the numerical prefixes, including mono. 

Example: Write the formula for each of the following compounds.

a)  Disulfur monobromide                                    b)  Iodine Tetrachloride

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Problem: Give the systematic name for each of the following compounds:

a. CO            b. N2S4             c. IO5

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Naming Covalent Compounds Additional Practice Problems

Identify the main group to which X belongs in each ionic compound formula:

(a) CaX2

(b) A12X3

(c) XPO4

Watch Solution

Identify the main group to which X belongs in each ionic compound formula:

(a) X2O3;

(b) XCO3;

(c) Na2X.

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Write a formula for each of the following molecular compounds. Express your answer as a chemical formula.

a. radon tetrafluoride

b. tetraphosphorus decoxide

c. xenon tetrafluoride

d. diboron trioxide

e. iodine monobromide

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A formula of Aluminum dichromate is Al 2(Cr2O7)3. What is the formula for Calcium dichromate?

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Give the name from the formula or the formula from the name for the following hydrated ionic compound:

nickel(II) sulfate tetrahydrate

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What is the chemical formula for diphosphorus pentoxide?

a. P4O3
b. P2O5
c. P2O4
d. PO3
e. P2O

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Solid copper reacts with solid sulfur to form solid copper(I) sulfide. What is the balanced equation?

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Give the formula from the name for the following hydrated ionic compound.

chromium(III) phosphate trihydrate

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Give the formula from the name for the following hydrated ionic compound.

iron(III) sulfate dihydrate

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Give the formula from the name for the following hydrated ionic compound.

aluminum nitrate dihydrate

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Give the formula from the name for the following hydrated ionic compound.

nickel(II) nitrate heptahydrate

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Give the name from the formula for the following hydrated ionic compound.

Na2CrO4.3H2O

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Give the name from the formula for the following hydrated ionic compound.

CoF2.6H2O

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Give the name from the formula for the following hydrated ionic compound.

BeCrO4.5H2O

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Give the name from the formula for the following hydrated ionic compound.

Zn3(PO4)2.3H2O

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Express your answer as a chemical formula.

a. Write a formula for the compound that forms from potassium and acetate.

 

b. Write a formula for the compound that forms from potassium and chromate.

 

c. Write a formula for the compound that forms from potassium and phosphate.

 

d. Write a formula for the compound that forms from potassium and cyanide.

 

e. Write a formula for the compound that forms from calcium and hydroxide.

 

f. Write a formula for the compound that forms from calcium and carbonate.

 

g. Write a formula for the compound that forms from calcium and phosphate.

 

h. Write a formula for the compound that forms from calcium and hydrogen phosphate.

Watch Solution

Name the hydrate MgSO. 7H2O. 

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A certain ionic compound is made entirely of aluminum and oxygen. What is the formula for this compound? Express your answer as a chemical formula.

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Write the chemical formula for the following:

a. beryllium phosphate trihydrate

b. copper(II) nitrate pentahydrate

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Calcium chloride contains only calcium and chloride. What is the formula for this compound?

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Name each molecular compound.

CO, NI3, SiCl4, N4Se4

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Write the formula for the compound cobalt(II) phosphate.

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What is the formula for the compound lead(II) phosphate?

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Deduce the formula of iron(III) sulfide.

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What is the formula for ammonium sulfide? Capitalization and punctuation count! How many hydrogen atoms are in 4.10 mol of ammonium sulfide?

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What is the name for the compound PCl 5? Spell out the full name of the compound.

 

What is the name for the compound P4O10? Spell out the full name of the compound.

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Determine the formula for barium phosphate.

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What is the name for the compound P4O10? Spell out the full name of the compound.

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What is the name of Fe(OH)3?

a) iron hydroxide

b) iron trihydroxide

c) iron (III) hydroxide

d) iron (II) hydroxide

e) none of these

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The chemical formula for sulfurous acid is _______________ .

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What is the molecular formula for ammonium nitrate?

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Which of the following statement(s) is/are correct:

   i. The correct name for Ga(NO3)3 ia gallium (III) nitrate

   ii. The correct name for Co(CrO4)3 is cobalt (VI) chromate

   iii. The correct name for AlCl3 is aluminum trichloride

A) i only

B) ii only

C) iii only

D) i and ii

E) i and iii

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Which of the following statement(s) is/are correct:

   i. The correct formula for carbonic acid is HCO 3-

   ii. The correct name for HBrOis perbromic acid

   iii. The correct formula for hydrosulfuric acid is H2SO4

A) i only

B) ii only

C) iii only

D) i and ii

E) i and iii

Watch Solution

Which of the following statement(s) is/are correct:

   i. The formula for magnesium phosphate would be Mg 2(PO4).

   ii. The formula for lead (IV) carbonate would be Pb(CO3)2.

   iii. The formula for cadmium bromide is CdBr2.

A) i only

B) ii only

C) iii only

D) ii and iii

E) i and iii

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Name the compound Ni(CO3)2.

A) Nickel carbonate

B) Nickel bicarbonate

C) Nickel (II) carbonate

D) Nickel carbonate (II)

E) Nickel (IV) carbonate

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Prefixes Used To Name Binary Covalent Compounds

Number of Atoms         Prefix             Number of Atoms           Prefix

        1                                                           6
        2                                                           7
        3                                                           8
        4                                                           9
        5                                                          10

Watch Solution

Choose the correct formula/ name combination.

A. CaH2 calcium hydride

B. SiOsilicon oxide

C. HClO chloric acid

D. Cu3(PO4)2 copper phosphate

E. AlCl3 aluminum trichloride

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Complete the following table with the missing formula or the missing IUPAC name:

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Choose the CORRECT formula/name combination.

a. Fe(H2PO4)3 Iron dihydrogen phosphate

b. Fe(H2PO4)3 Iron(III) hydrogen phosphate

c. HCl(g) Hydrochloric acid

d. H2O Dihydrogen oxide

e. H3N Trihydrogen mononitride

Watch Solution

What is the systematic name of Mg(NO3)2, NH4ClO3, and PbO and how do you get those answers?

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An alkaline earth metal forms a compound with oxygen with the formula: 

(The symbol M represents any one of the alkaline earth metals.)

A) MO

B) M2O

C) MO2

D) M2O2

E) MO3

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What is the name of H2SO4(aq)?

a. hydrogen persulfate

b. sulfurous acid

c. dihydrogen sulfur tetraoxide

d. sulfuric acid

e. dihydrosulfate

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Gaseous HCl is known as

a. hydrogen chloride.

b. hydrochloric acid.

c. monohydrogen monochloride.

d. hydride (I) chloride.

e. hydrogen monochlorine.

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What is the molar mass of tetraphosphorus pentoxide?

(A) 100 g/mol

(B) 142 g/mol

(C) 173 g/mol

(D) 204 g/mol

(E) 220 g/mol

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Give formulas for the following compounds:

chlorine trifluoride

 

tetraphosphorus heptasulfide

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The formula of the compound formed in the reaction between lithium and sulfur is

A. LiS

B. LiS2

C. Li2S2

D. Li2S

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Which of the following compounds is incorrectly named?

(A) P2O5 is diphosphorus pentoxide

(B) N2O5 is dinitrogen pentoxide

(C) Si3N4 is trisilicon tetranitride

(D) CO2 is carbon dioxide

(E) S2Cl2 is disulfurous dichloride

Watch Solution

Which of the following compounds is incorrectly named?

(A) Mg(OH)2 is magnesium dihydroxide

(B) CaO is calcium oxide

(C) NH4NO3 is ammonium nitrate

(D) K3PO4 is potassium phosphate

(E) MgSO3 is magnesium sulfite

Watch Solution

The prefix “bi” is added to anion names to indicate an extra positive hydrogen, as for example, in bicarbonate compared to carbonate. Which of the following anions would be known as biphosphate?

(A) HP-

(B) (PO4)22-

(C) HPO32-

(D) HPO42-

(E) HPO43-

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Which of the following formulas represents gallium sulfide?

(A) GaS

(B) Ga3S3

(C) Ga3S2

(D) Ga2S2

(E) Ga2S3

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What is the chemical formula of magnesium phosphate?

(A) MgP

(B) MgPO

(C) MgPO4

(D) Mg2(PO4)3

(E) Mg3(PO4)2

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What is the name given to the compound whose formula is N 3S6 (be careful!!!!!)?

(A) nitrogen sulfur

(B) trinitrogen hexasulfur

(C) trinitrogen sexasulfide

(D) trinitrogen hexasulfide

(E) hexasulfur trinitride

Watch Solution

The naming of polyatomic anions, while seemingly random, actually does have some rules. Two in particular concern the use of the prefix “bi” , which is used to indicate an extra positive hydrogen, and the difference between the suffices "ite" and "ate," which is based on number of oxygen atoms ("ite" means one less than "ate"). These are exemplified by the differences between carbonate and bicarbonate and sulfite and sulfate, respectively! Given this, what is the formula of biphosphite?

(A) HP-

(B) (PO4)22-

(C) HPO32-

(D) HPO42-

(E) PO33-

Watch Solution

What is the molar mass of magnesium nitrate?

(A) 38.3 g/mol

(B) 43 g/mol

(C) 74 g/mol

(D) 86.3 g/mol

(E) 148.3 g/mol

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What is the formula of aluminum sulfite?

(A) AlS

(B) AlSO3

(C) Al2(SO4)3

(D) Al2(SO3)3

(E) Al2S3

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What is the name given to the compound whose formula is S 3F6?

(A) sulfur fluorine

(B) trisodium hexafluoride

(C) trisulfur sexafluoride

(D) sulfur fluoride

(E) trisulfur hexafluoride

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What is the formula of aluminum sulfide?

(A) AlS

(B) AlSO3

(C) Al3S2

(D) Al2(SO3)3

(E) Al2S3

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What is the chemical formula of magnesium phosphate?

(A) MgP

(B) MgPO

(C) MgPO4

(D) Mg2(PO4)3

(E) Mg3(PO4)2

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The IUPAC name for Cu2O is

  1. copper oxide
  2. copper (I) oxide
  3. copper (II) oxide
  4. copper (III) oxide
  5. none of these
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The chemical formula for ammonium hydrogen phosphate is

  1. (NH4)2HPO4
  2. NH4HPO4
  3. NH4(HPO4)2
  4. NH4H2PO4
  5. None of these
Watch Solution

Name the following compounds:

a) Ca(BrO2)2            

 

b) Sr3P2

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Name the following acids:

a) HI              

b) H2SO3       

c) HClO4       

d) HBrO3      

e) H2Te

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What is the name of N 2O?

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What is the name of PCl 5

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What is the name of PbCl 4?

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What is the name of FeSO 4

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Which is the correct formula of trisulfur monophosphide?

A. S3PO4

B. (SO4)3P

C. S3P

D. (SO3)3PO4

E. None of these choices are correct.

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Which is the correct name for Na 2SO3?

A. sodium sulfate

B. sodium sulfite

C. sodium sulfide

D. sodium hydrogen carbonate

E. ammonium sulfide

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Write a balanced equation to show the reaction of aqueous aluminum acetate with aqueous ammonium phosphate to form solid aluminum phosphate and aqueous ammonium acetate.

A) Al(C2H3O2)2(aq) + (NH4)2PO4(aq) → AlPO4(s) + 2 NH4C2H3O2(aq)

B) Al(C2H3O2)2(aq) + (NH3)2PO4(aq) → AlPO4(s) + 2 NH3C2H3O2(aq)

C) Al(CO3)2(aq) + (NH3)2PO4(aq) → AlPO4(s) + 2 NH3CO3(aq)

D) Al(C2H3O2)3(aq) + (NH4)3PO4(aq) → AlPO4(s) + 3 NH4C2H3O2(aq)

E) Al(CO2)3(aq) + (NH4)3PO3(aq) → AlPO3(s) + 3 NH4CO2(aq)

Watch Solution

If a formula is given, provide the name. If a name is given, provide the formula.

a. LiOH

b. Perchloric acid

c. SeF6

d. potassium permanganate

e. chromium (III) nitrate

f. tetraphosphorous decasulfide

g. VCl5

Watch Solution

Name the compound SCl 6.

1. sulfur(VI) chloride

2. sulfur hexachloride

3. silicon hexachloride

4. silicon chloride

5. sulfur chloride

Watch Solution

The correct name for CuSO4·5H2O is

A) cuprous sulfate pentahydrate

B) copper(I) sulfate pentahydrate

C) cuprous sulfate tetrahydrate

D) copper(II) sulfate tetrahydrate

E) copper(II) sulfate pentahydrate

Watch Solution

The name for the two compounds HBrO and Fe2(SeO3)3 are, respectively:

A) hypobromic acid, iron (III) selenite

B) hypobromous acid, iron (III) selenite

C) bromic acid, iron (II) selenite 

D) perbromic acid, iron (II) selenate

E) hypobromous acid, iron (III) selenate

Watch Solution

Give the name for PBr3.

A) phosphorus tribromide

B) potassium tribromide

C) phosphorus (III) bromide

D) phosphorus (II) bromide

E) phosphorus bromide

Watch Solution

Rb2S is named

A) rubidium disulfide.

B) rubidium sulfide.

C) rubidium(II) sulfide.

D) rubidium sulfur.

Watch Solution

Give the structure for sodium perchlorate.

A) NaClO

B) NaClO2

C) NaClO3

D) NaClO4

Watch Solution

Write the chemical formula or the name for the following.

A. Boron Phosphide

B. Tetraphosphorous trisulfide

C. Nitric acid

D. Silver hypochlorite

E. Pb3N4

F. MnSO3

G. ICI3

H. SF6

Watch Solution

Write a sentence describing this reaction using correct chemical names. Do not worry about states:

Pb(NO3)2 + Ca(OH)2 → Pb(OH)2 + Ca(NO3)2

 

Watch Solution

Give the formulas for the following compounds

a)  dihydrogen oxide                           _________________

b)  nickel(II) nitrate hexahydrate         ­­­­­­­­_________________

c)  sodium nitride                                _________________

d)  calcium perchlorate                       _________________

Watch Solution

Name the following compounds

a)  Co3(PO4)2 · 4H2O         _____________

b)  NH4Cl                          _____________

c)  Mn(OH)2                      _____________

d)  SO3                              ­­­­­­­­­­­­­­­­­­­­­­­­­­­­_____________

Watch Solution

What are the formulas of tetraphosphorous heptasulfide and copper(II) sulfate pentahydrate?

A. K4S7 and CuSO4 . 7 H2O

B. K4S5 and CuSO4 . 7 H2O

C. P4S7 and CuSO4 . 5 H2O

D. P4S5 and CuSO4 . 5 H2O

E. none of these

Watch Solution

Which set of the statements below includes only the correct names and formulas?

i) Barium oxide has the formula BaO2

ii) CrCO3 is chromium(II) carbonate

iii) Magnesium sulfite has the formula MnSO3

A. ii) only

B. i) only

C. i) and ii) only

D. iii) only

E. i) and iii) only

Watch Solution

Calculate the number of moles of aluminum oxide in 6.83 g of this ionic compound?.

a. 6.70 x 10–2 mol

b. 6.96 x 102 mol

c. 0.253 mol

d. 0.127 mol

e. 1.56 x 10–3 mol

 

Watch Solution

What is the correct name for SrCl2?

a. strontium dichloride

b. strontium dichlorine

c. strontium(II) dichloride

d. strontium chloride

e. chlorine strontide

 

 

Watch Solution

What is the correct name for NH4NO3?

a. ammonia hydrogen nitrate

b. ammonia hydrogen nitride

c. ammonium nitric acid

d. ammonium nitrate

e. ammonium nitride

 

Watch Solution

What is the correct formula for calcium perchlorate?

a. Ca(ClO4)2

b. Ca3(ClO4)2

c. CaClO4

d. Ca(ClO2)2

e. Ca(ClO3)2

 

Watch Solution

Give the formulas or names for the following compounds:

sodium nitrate          ___________  CaSO 4    ___________________________
sulfur hexaflouride   ___________  NH4NO3  ___________________________
sodium chlorate       ___________  K2HPO4  ___________________________

Watch Solution

Give the formulas for the following compounds

A)  dihydrogen oxide                           _______________

B)  nickel(II) nitrate hexahydrate         ­­­­­­­­_______________

C)  sodium nitride                                ________________

D)  calcium perchlorate                       ________________

Watch Solution

How many hydrogen atoms appear in the formula of ammonium sulfate?

1. 6 atoms

2. 10 atoms

3. 4 atoms

4. 2 atoms

5. 8 atoms 

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What is the correct name for SO2?

1. sodium dioxide

2. sulfur dioxide 

3. sulfur oxide

4. sodium oxide

5. silicon oxide

6. silicon dioxide

Watch Solution

Write the formula for Cadmium sulfide (yellow paint)  

Watch Solution

Write the formula of ammonium chloride.

 

Write the formula of iron (II) perchlorate.

 

What is the name of Sn(SO 4)2?

Watch Solution

Write a  balanced equation to show the reaction of sulfurous acid with lithium hydroxide to form water and lithium sulfite.

a. H2SO4 (aq) + LiOH (aq) → H2O (l) + Li 2SO4 (aq)

b. H2SO3 (aq) + 2 LiOH (aq) → 2 H 2O (l) + Li2SO3 (aq)

c. HSO3 (aq) + LiOH (aq) → H 2O (l) + LiSO3 (aq)

d. HSO4 (aq) + LiOH (aq) → H 2O (l) + LiSO4 (aq)

e. H2S (aq) + 2 LiOH (aq) → 2 H 2O (l) + Li 2S (aq)

 

Watch Solution

Write the formula for barium nitrite.

a. Ba3N2

b. BaNO3

c. BN

d. Ba(NO2)2

e. B(NO2)3

Watch Solution

Which acid/name pair is NOT correct?

a. HBr, hydrobromic acid

b. H2CrO4, chromic acid

c. H3PO4, hydrophosphoric acid

d. HCl, hydrochloric acid

Watch Solution

Determine the name for P4O10.

a. phosphorus (IV) oxide

b. diphosphorus pentoxide

c. phosphorus oxide

d. phosphorus (II) oxide

e. tetraphosphorus decoxide

Watch Solution

What is the  systematic name of Co3(PO4)2?

a. cobalt (III) phosphide

b. cobalt (II) phosphite

c. cobaltous phosphate

d. cobalt (II) phosphate

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What is the chemical formula for a compound containing strontium ions and perchlorate?

a. SrClO4

b. SrCl2

c. Sr(ClO3)2

d. Sr(ClO4)2

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Which of the following is the best representation of the compound magnesium nitride?

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Which of the following is the correct formula for sodium hypochlorite?

1. NaClO2

2. NaClO3

3. NaCl

4. NaClO

5. NaClO4

Watch Solution

What is the correct name for (NH 4)2CO3?

1. ammonium carboxide

2. ammonium bicarbonate

3. ammonium carbonate 

4. biammonium carbonate

Watch Solution

Give the formula for aluminum hydroxide.

1. AlH3

2. AlOH3

3. Al(OH)3

4. AlOH 

Watch Solution

Provide the missing information.

Formula                       Name

CuCl2                           _________________________

 

______                        nitrous acid

 

NF3                                 _________________________

 

Watch Solution

The correct name for the ClO3- ion is

a) perchlorate ion

b) hypochlorite ion

c) chlorite ion

d) chlorate ion

e) chlorine trioxide ion

Watch Solution

Determine the name of I 25
A. iodine pentoxide
B. iodine (V) oxide
C. diiodine oxide
D. iodine (II) oxide
E. diiodine pentoxide

Watch Solution

Give the systematic name for Cr3P2 and the chemical formula for calcium nitrate.

A. chromium phosphide and CaN  2
B. chromium (II) phosphide and Ca(NO 32
C. chromous disphosphide and CaNO 3
D. chromium (II) phosphide and Ca 23

Watch Solution

What is the formula for the ionic compound formed between sodium and nitrogen?

A) NaN               

B) NaN2             

C) Na3N         

D) Na3N2          

E) NaN3

 

Watch Solution

What is the chemical formula of sodium perchlorate?

A) NaClO          

B) NaClO2         

C) NaClO3         

D) NaClO4          

E) NaMnO4

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What is the name for SO3?

A) sulfite

B) sulfur (VI) oxide

C) sulfur trioxide

D) sulfur (III) oxide

E) sulfur oxide

Watch Solution

Write the formula for barium nitrite.

A) Ba3N2

B) Ba(NO2)3

C) BaNO3

D) Ba(NO2)2

E) BN

Watch Solution

Write the formula for strontium nitride.

A) Sr(NO3)2

B) SrN

C) Sr2N3

D) Sr(NO2)2

E) Sr3N2

Watch Solution

Determine the name for P4O10.

A) phophorus oxide

B) tetraphophorus decaoxide

C) diphosphorus pentaoxide

D) phosphorus (IV) oxide

E) phosphorus (II) oxide

Watch Solution

Write the name for Sn(SO 4)2.

A) tin (II) sulfite

B) tin (I) sulfite

C) tin (I) sulfate

D) tin (IV) sulfate

E) tin sulfide

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Write the name for Ca 3(PO4)2.

A) tricalcium phosphorustetraoxide

B) calcium (II) phosphite

C) calcium phosphite

D) calcium (III) phosphite

E) calcium phosphate

Watch Solution

Write the formula for the compound formed between potassium and sulfur.

A) KS

B) K3S2

C) K2SO3

D) KS2

E) K2S

Watch Solution

Determine the names for N2O5 and HNO3.

a. nitrogen pentoxide and nitrous acid

b. nitrogen oxide and nitric acid

c. nitrogen (IV) oxide and hydronitrous acid

d. nitrogen (II) oxide and hydrogen (I) nitrate

e. dinitrogen pentoxide and nitric acid

Watch Solution

Give the systematic name for Fe3P2 and the chemical formula for calcium nitrate.

a. iron (II) phosphide and CaN2

b. iron (II) phosphide and Ca(NO3)2

c. ferrous diphosphide and CaNO3

d. iron (II) phosphide and Ca2N3

Watch Solution

As a transition metal, osmium can exhibit many different charges, but one of the most highly charged is found in osmium (VIII) oxide. What is the chemical formula for this compound?

a. Os8O

b. OsO4

c. OsO8

d. Os8O2

Watch Solution

Which of the following formula/name pairs is incorrect?               

A)  FeO  iron(II) oxide

B)  K2SO4   potassium sulfide

C)  MnO2  manganese(IV) oxide

D)  LiOH  lithium hydroxide

E)  MgO  magnesium oxide

Watch Solution

Write the balanced chemical equations.

Nitric acid forms when gaseous nitrogen dioxide reacts with gaseous oxygen and liquid water.

Watch Solution

Name the Ionic Compounds

1. KMnO4
2. Sn(SO4)2
3. CuSO4 • 5H2O
4. CH3COONa

Watch Solution

Write the name for Sr 3(PO4)2.
A) strontium (III) phosphite
B) strontium (II) phosphite
C) strontium phosphate
D) tristrontium phosphorustetraoxide
E) strontium phosphite

Watch Solution

Determine the name for Cl2O.

a. chlorine oxide

b. dichlorine monoxide

c. chlorine (I) oxide

d. chlorine (II) oxide

e. chlorate

Watch Solution

Which of the following statements is/are correct?

i. Ca(CIO2)2 is the symbol for calcium chlorite
ii. VF5 would be called vanadium pentaflouride
iii. Sodium phosphide would be symbolized as Na3PO3

A. i only
B. iii only
C. i and iii
D. ii and iii
E. i, ii and iii

Watch Solution

Which of the following statements is correct.

i. The formula for hydrosulfurous acid is H2SO3
ii. The correct name for HBrO3 is bromic acid
iii. The symbol for hypobromous acid is HBrO

a. i only
b. ii only
c. iii only
d. i and ii
e. ii and iii

Watch Solution

Sulfurous acid is:

a. H2S

b. H2SO2

c. H2SO4

d. H2SO3

e. HSO3

Watch Solution

SeO42- is the  selenate ion, so the correct nomenclature for H 2SeO3 is

a. hydroselenic acid

b. selenic acid

c. selenous acid

d. hydroselenous acid

e. hyposelenous acid

Watch Solution

Which of the following statements is/are true?

i. The correct name for Cl2O6 is chlorine hexoxide

ii. The correct formula for tetraboron decahyride is B4H10.

iii. The correct name for CF4  is monocarbon tetrafluoride.

a. i only

b. ii only

c. iii only

d. i and ii

e. i and iii

Watch Solution

Determine the names for I2F7 and HNO2

a. iodine heptoxide and nitrous acid

b. iodine fluoride and nitric acid

c. diiodine heptafluoride and nitrous acid

d. heptafluoroidic acid and hydrogen (I) nitrite.

e. diiodoheptafluorodine and nitric acid

Watch Solution

Give the systematic  name for Co3N2 and the chemical formula for potassium carbonate.

a. cobalt (III) nitrade and K(CO3)2

b. cobalt (II) nitride and K2CO3

c. cobaltic dinitride and KCO3

d. cobalt (II) nitrogide and K2C3

Watch Solution

The most commercially important form of vanadium is the compound of vanadium (V) oxide, which is used as a catalyst in the production of sulfuric acid. What is the chemical formula for this compound?

a. VO5

b. 5VO

c.V5O2

d. V2O5

Watch Solution

Determine the name for Ti(ClO3)2 . Note: Titanium has multiple possible charges.

a) titanium chloroxide

b) titanium (I) chlorate

c) titanium (I) perchlorate

d) titanium (II) perchlorate

e) titanium (II) chlorate

Watch Solution

Consider the chemical reaction: 2 SO2 (g) → SO(g) + SO3 (g)

Determine if the sentence below is true or false

The name of SO is sulfur oxide.

Watch Solution

Which of the following diagrams is the most accurate representation of MgCl(aq)?

Watch Solution

Name each molecular compound. 

b. SO2

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Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)

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Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)

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Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)

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Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)

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Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)

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Name the acid H3PO4 (dissolved in water).

A) Hydrogen phosphate acid

B) Phosphoric acid

C) Hydrophosphoric acid

D) Phosphorous acid

E) Hydrophosphate acid

Watch Solution

The formula for dinitrogen trioxide is

a) (NO3)2.

b) N(OH)3.

c) N2O3.

d) N3O2.

Watch Solution

The name for KHCO3 is

a) calcium carbonate.

b) potassium hydrogen carbonate.

c) calcium hydrogen carbon trioxide.

d) potassium carbonate.

e) calcium bicarbonate.

Watch Solution

Which of the following formulas is most likely incorrect?

a) Al2(SO4)3

b) NaClO3

c) K2O3

d) Mg(NO3)2

e) AlN

Watch Solution

Name the following compounds:

1. CaF2 ______________________________

2. CoF2 ______________________________

3. BF3 ______________________________

Watch Solution

Neodymium chromate is Nd2(CrO4)3. What are the formulas of neodymium nitrate and neodymium phosphate?

A. Nd(NO3)3, Nd3(PO4)2

B. Nd(NO3)3, Nd3PO4

C. Nd3(NO3)2, NdPO4

D. Nd2(NO3)3, Nd2(PO4)3

E. Nd(NO3)3, NdPO4

Watch Solution

Write the formulas for the following compounds

a) ammonium sulfate:

 

b) calcium hypobromite:

 

c) magnesium hydroxide:

 

d) aluminum phosphate:

 

e) hydroiodic acid:

 

Watch Solution

For each of the following equations, write the chemical formulas and balance the equation. Try to indicate all the physical states (solid, liquid, gas) as well.

a) potassium + water → potassium hydroxide + hydrogen

 

 

b) potassium hydride + water → potassium hydroxide + hydrogen

 

 

c) silicon dioxide + carbon → silicon carbide + carbon monoxide

 

 

d) silicon dioxide + hydrogen fluoride → silicon tetrafluoride + water

 

 

e) phosphorus + chlorine → phosphorous tetrachloride

Watch Solution

Which of the following best names the compound HClO 3 (aq) in aqueous solution?

a) Chloric acid

b) Hydrochloric acid

c) Hydrogen chloride

d) Hypochloric acid

e) Perchloric acid

Watch Solution

Which of the following correctly names all three ionic and covalent compounds? 

Fe(NO3)3                     KBr                            N     2O3

a) iron (III) nitrate         potassium bromate        dinitrogen oxide

b) ferrous nitrate          potassium bromide        nitrogen oxide

c) iron (III) trinitrate      potassium bromide       dinitrogen trioxide

d) ferric trinitrate          potassium bromide       nitrogen oxide

e) iron (III) nitrate        potassium bromide       dinitrogen trioxide

Watch Solution

The chemical formula for cadmium (II) sulfite is

a) Cd2(SO3)2

b) Cd(SO3)3

c) Cd2(SO3)3

d) CdSO3

e) none of these

Watch Solution

The name for Fe(ClO4)3 is

a) iron(II) perchlorate

b) iron(III) perchlorate

c) iron(II) chlorate

d) iron(III) chlorate

e) none of these

Watch Solution

Name the following compounds: 

Cl2O7 _______________________________________________________________

Co(NO2)3 • 4H2O _______________________________________________________________

Mg(HCO3)2 _______________________________________________________________

 

Write formulas for the following compounds:

chromium(III) hypobromite ________________________________________________________

sulfurous acid ________________________________________________________ 

 

Watch Solution

For each of the items written below, state why it is wrong and write a version that is correct. 

Iron Chloride

What’s wrong? 

Write a correct version

 

Watch Solution

Write the formula for the compound expected to form between barium and nitrogen.

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Provide the name for this given compound :

Mg3(PO4)2

(a) mercury(III) diphosphate

(b) magnesium phosphate

(c) magnesium(II) perphosphate

(d) manganese phosphide

(e) manganese(II) phosphate

Watch Solution

Name the compound K2SO3

a) potassium sulfate

b) dipotassium sulfate

c) dipotassium sulfite

d) potassium sulfite

e) potassium persulfate

Watch Solution

What would be the correct formula for an ionic compound that combines calcium and sulfate?

A. CaS            B. Ca 2S2            C. Ca(SO 4)2            D. CaSO 4            E. CaSO 8

Watch Solution

All but one of the following compounds is named incorrectly. Which of the following statements is correctly named?

1. Iron (III) nitrate is Fe(NO3)3

2. Manganese sulfate is MnSO3

3. Bromic acid is HBrO

4. Lithium phosphide is Li3PO4

Watch Solution

Which of the following compounds is incorrectly named?

1. Iron (III) carbonate       Fe 2(CO3)3

2. Sodium sulfite             Na  2SO4

3. Dinitrogen tetroxide       N 2O4

4. Aluminum phosphide         AlP

Watch Solution

Which of the following compounds whose formulas are in the left hand–column is incorrectly named in the right–hand column?

A. SO3                    sulfur (VI) oxide

B. HClO2                chlorous acid

C. VBr3                   vanadium (III) bromide

D. Sn(SO4)2           tin (IV) sulfate

E. K3P                    potassium phosphide

Watch Solution

What is the formula of titanium (II) phosphate?

1. Ti2PO4            2. Ti 3(PO4)2            3. TiPO3            4. Ti2(PO4)3

Watch Solution

The formula of sodium vanadate is Na 3VO4. What is the formula of calcium vanadate?

A. CaVO4            

B. Ca(VO4)2            

C. Ca(VO4)3

D. Ca3(VO4)2            

E. Ca 2VO4

Watch Solution

What is the formula of lead (II) nitrite?

A. Pb3N2

B. Pb(NO3)2

C. Pb2NO3

D. Pb(NO2)2

E. Pb2N3

Watch Solution

Which of the following formulas is incorrect?

1. K2O            

2. Al 2S3            

3. MgO            

4. BaF

Watch Solution

The formula for arsenous acid is:

a) H2AsO3

b) H3AsO2

c) H2AsO4

d) H3AsO4

e) H3AsO3

Watch Solution

Which of the following formulas is incorrect?

A. Ba3P2          

B. SrCO 3          

C. Cs 3N

D. CaBr            

E. Li  2SO3

Watch Solution

What is the name of the following polyatomic ion, BrO 3 ?

a) Bromate

b) Bromide

c) Perbromate

d) Hypobromite

 

Based on the previous question, the compound HBrO 3 is correctly named as:

a) Hydrobromic acid

b) Bromous acid

c) Bromic acid

d) Perbromic acid

Watch Solution

What is the name of the following polyatomic ion, ClO ?

a) Chloride           b) Perchlorate           c) Chlorate           d) Hypochlorite

 

 

Based on the previous question, the compound HClO is correctly named as:

 

a) Hydrochloric acid           b) Chloro-oxyacid           c) Hypochlorous acid           d) Chloric acid

Watch Solution

Determine the names for N2O5 and HNO3

A. nitrogen pentoxide and nitrous acid

B. nitrogen oxide and nitric acid

C. nitrogen (IV) oxide and hydronitrous acid

D. nitrogen (II) oxide and hydrogen (I) nitrate

E. dinitrogen pentoxide and nitric acid

Watch Solution

Give the systematic name for Fe3P2 and the chemical formula for calcium nitrate.

A. iron (II) phosphide and CaN2

B. iron (II) phosphide and Ca(NO3)2

C. ferrous diphosphide and CaNO3

D. iron (II) phosphide and Ca2N3

Watch Solution

Give the systematic name for Fe3P2 and the chemical formula for calcium nitrate.

A. iron (II) phosphide and CaN2

B. iron (II) phosphide and Ca(NO3)2

C. ferrous diphosphide and CaNO3

D. iron (II) phosphide and Ca2N3

Watch Solution

As a transition metal, osmium can exhibit many different charges, but one of the most highly charged is found in osmium (VIII) oxide. What is the chemical formula for this compound?

A. Os8O

b. OsO4

c. OsO8

D. OsO2

Watch Solution

Name the compound K2SO3

 

a. potassium sulfate

b. dipotassium sulfate

c. dipotassium sulfite

d. potassium sulfite

e. potassium persulfate

Watch Solution

In K2O2, the oxygen is called a

a. dioxide

b. oxide

c. peroxide

d. peroxite

e. superoxide

Watch Solution

Name the compound N2O5

a. nitrogen oxide

b. nitrogen pentoxide

c. dinitrogen pentoxide

d. nitrogen (5) oxide

e. nitrogen (V) pentoxide

Watch Solution

Name the following compounds:

1. Cr(BrO)3

 

2. Ba(IO4)2

 

3. NH4C2H3O2

Watch Solution

Give formulas for the following compounds:

 

1. nickel(II) nitrite tetrahydrate:

 

2. barium hydrogen sulfate:

 

3. arsenic pentafluoride:

Watch Solution

Given that the ion is named sulfate, we can infer that the ion would be named selenate.

 

Name the following compounds containing the selenate ion:

Cr2(SeO4)3:

MgSeO4 • 4H2O:

 

Name the following ions:

SeO32-:  

HSeO4- :

Watch Solution

What is the correct name for FeCl3?

a) iron(III) chloride

b) iron trichloride

c) ferrum trichloride

d) ferric trichloride

e) iron chloride

Watch Solution

Which one of the formula-name combinations is not correct?

a) sulfur monoxide: SO

b) sulfur dioxide: SO2

c) sulfur trioxide: SO3

d) disulfur monoxide: S2O

e) heptasulfur oxide: S6O

Watch Solution