Ch.15 - Acid and Base EquilibriumWorksheetSee all chapters
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Ch.15 - Acid and Base Equilibrium
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Jules Bruno

Conjugate acids and bases

In this guide, we take a look at what’s meant by a conjugate. Now, we have conjugate acids and conjugate bases. 

Conjugate acid

For a conjugate acid, all you’re going to do here is you’re going to add an H+ to the compound. It causes the charge to become more positive for that compound or element. For example, here we have hydrogen phosphate. We’re going to say here you’re starting off with a charge of minus 2. I’m going to add an H+ to it, so it becomes H2PO4. But remember, we’re not only adding a hydrogen, we’re adding a plus one charge to it as well. This is going to cause the charge to become more positive. We’re going to go from being -2 to being -1. Now we have dihydrogen phosphate which is H2PO4-. This would represent the conjugate acid of this compound here. 

Conjugate base

Conjugate base is the exact opposite. For conjugate base, all you do is remove an H+ from the compound causing its charge to become more negative. Here we have HS-. We’re going to remove an H+ from it. It started off as -1, but now it’s going to become more negative because you’re also losing a +1 as well as that hydrogen. Now it drops down to its new charge of 2-. This sulfide ion represents the conjugate base of HS-.

Summary

Remember, figuring out the conjugate acid or conjugate base of something is really simple if you just remember the following: Conjugate acid, you add an H+, the charge becomes more positive. Conjugate base, you remove an H+, charge becomes more negative for the compound or the element.


Jules Bruno

Jules felt a void in his life after his English degree from Duke, so he started tutoring in 2007 and got a B.S. in Chemistry from FIU. He’s exceptionally skilled at making concepts dead simple and helping students in covalent bonds of knowledge.


Additional Problems
Which of the following acids will have the strongest conjugate base? A) HCl B) HClO4 C) HNO3 D) HCN E) HI
What is the conjugate base of H 2PO4− ? A) HPO42- B) PO43- C) H3PO4 D) H3O+ E) OH−
What is the conjugate acid of HPO 4 2−? A) HPO 4 2− B) PO 4 3− C) H 3PO 4 D) H 2PO 4 − E) None of these
What is the Bronsted-Lowry conjugate of butylamine, C 4H9NH2? C4H9NH C4H9NH – C4H9NH+ C4H9NH3+ C4H9NH3
What is the conjugate base for the following compounds? a) HPO42-   b) HCOOH   c) CH2ClCOOH
What is the conjugate acid for the following compounds? a. HSO4-     b. NH 3  
Which answer corectly lists the Bronsted-Lowry conjugate of propylamine, C 3H7NH2? a. C3H7NH b. C3H7NH – c. C3H7NH3 d. C3H7NH3+ e. C3H7NH+
Which of the following is not a conjugate acid-base pair? CH3NH3+    and       CH3NH2 LiH2SO 4      and      Li2SO4 NaH2PO4    and       Na2HPO4 HF              and        NaF All are conjugate acid-base pairs. 
Give the conjugate acid for each compound below.  HSO4- CO32-  NH3
Which of the following is the strongest base?       A) ClO 4−          B) SO 4 2−          C) Cl −             D) NO 3−           E) F −
After a substance acting as a strong acid reacts, what remains of the acid? A) A weak conjugate base            B) A strong conjugate base        C) A strong conjugate acid D) A strong acid                             E) A weak conjugate acid
 What is conjugate acid of NH3? A) NH2                  B) NH2+                    C) NH2-                D)  NH4               E) NH4+
What is the conjugate acid of the acetate ion? A) CH3O2-             B) COOH                 C) CH3COOH    D) H2O                  E) CH4
What is the conjugate base of HSO 4– in the reaction below? CO32– + HSO4–  ⇌  HCO3– + SO42– A)  HSO4–             B)  CO32–                 C)  OH–                D)  H3O+              E)  SO42–
Which of the following statement(s) is/are correct. i. OH- is the conjugate acid of H 2O. ii. C3H7NH3+ is the conjugate acid of C3H7NH2. iii. HPO42- is the conjugate base of PO43- A, i only B. ii only C. iii only D. ii and iii E. i and iii
Consider the following reaction: HF(aq) + CN-(aq) ⇌ HCN(aq) + F-(aq) a. Identify the acid-base conjugate pairs.   Given the Ka values below HCN(aq) ⇌ H+(aq) + CN-(aq)    Ka= 6.2x 10-16 HF(aq) ⇌ H+(aq) + F-(aq)          Ka= 6.6x 10-4 Is HF or HCN the strongest acid? Why? If I have 1M HCN in a flask A and 1M of HF in flask B, which solution will conduct more electricity? Why? Will equilibrium at the start of this question favor the formation of reactants (left side) or product (right side)? What is the value for K for the equilibrium at the start of this question (looking for number)?  
Which of the following is  NOT a conjugate acid-base pair? A) NH4+ / NH3 B) H3O1+ / OH1- C) H2SO3 / HSO31- D) C2H3O21- / HC2H3O2 E) All of the above conjugate acid-base pairs. 
What is the conjugate base of HSO4- A. HSO4- B. H2SO4 C. SO4 D. HSO4 E. SO42-
Hydrogen cyanate (HOCN, K a = 3.3 x 10 -4) is a distant cousin of the more (in)famous compound, hydrogen cyanide (HCN, K a = 4.0 x 10 -10), but it still manages to eke out a comfortable living as a weak acid in chemistry text books. A. Which is more basic: OCN - or CN - ?explain your reasoning.   B. Determine Kc for the reaction HCN + OCN - ⇌ CN - + HOCN
What is the conjugate base of HPO 42− ? A) H2PO4− B) PO43− C) H3PO4 D) H3O+ E) OH−
Which is the strongest base? (Hint: Consider the relative strengths of the conjugate acids.) 1. ClO4− 2. Cl− 3. ClO3− 4. ClO2− 5. ClO−
What is the conjugate acid of morphine, C17H19NO3. A. C17H18NO3 − B. C17H20NO3 + C. C17H18NO3 D. C17H20NO3
Which of the following is not a conjugate acid-base pair? a) NaC2H3O2/HC2H3O2 b) NH4Cl/NH3 c) H3O + /OH – d) HNO2/LiNO2 e) All are conjugate acid-base pairs. 
What is the conjugate base of CH3NH3+ ? a) CH3NH3 b) CH3NH2+ c) CH3NH3- d) CH3NH2 e) CH3NH2-
What is the conjugate acid of NH 2 – ? a. H+ b. H2O c. NH3 d. NH4 + e. H3O
Which is a stronger base: ClO3- or IO3-?
Identify the conjugate base in the reaction: HClO2 (aq) + H2O (l) → H3O+(aq) + ClO2-(aq) (a) HClO2 (b) H2O (c) H3O+ (d) ClO2-  
Determine the conjugate base for each of the following compounds.  a) HPO42–   b) CH3CH2CH2NH3+   c) HCO3–   d) HCO2H  
What is the conjugate acid of NH 3 A) H3O+ B) NH4+ C) NH2- D) NH4OH- E) None of the Above
Determine the conjugate acid for each of the following compounds.  a) C6H5NH2   b) PO33–   c) CH3CO2–   d) Te2–
What is the conjugate acid of HCrO 4– ? A. H2CrO-4 B. H2CrO4 C. CrO4 D. CrO42- E. H2CrO42-
Give the conjugate acid of the following Bronsted-Lowry base: O2-.
Give the conjugate acid of the following Bronsted-Lowry base: H2PO4-.
Label each of the following as being a strong base, a weak base, or a species with negligible basicity. In each case write the formula of its conjugate acid, and indicate whether the conjugate acid is a strong acid, a weak acid, or a species with negligible acidity.Write the formula of HCO3- conjugate acid
Label each of the following as being a strong base, a weak base, or a species with negligible basicity. In each case write the formula of its conjugate acid, and indicate whether the conjugate acid is a strong acid, a weak acid, or a species with negligible acidity.Indicate whether the conjugate acid of HCO3- is a strong acid, a weak acid, or a species with negligible acidity.
Label each of the following as being a strong base, a weak base, or a species with negligible basicity. In each case write the formula of its conjugate acid, and indicate whether the conjugate acid is a strong acid, a weak acid, or a species with negligible acidity.Indicate whether the conjugate acid of O2- is a strong acid, a weak acid, or a species with negligible acidity.
Label each of the following as being a strong base, a weak base, or a species with negligible basicity. In each case write the formula of its conjugate acid, and indicate whether the conjugate acid is a strong acid, a weak acid, or a species with negligible acidity.Write the formula of NH3 conjugate acid
Label each of the following as being a strong base, a weak base, or a species with negligible basicity. In each case write the formula of its conjugate acid, and indicate whether the conjugate acid is a strong acid, a weak acid, or a species with negligible acidity.Indicate whether the conjugate acid of NH3 is a strong acid, a weak acid, or a species with negligible acidity.
Write the formula for the conjugate base of each of the following acids.H2SO3
Write the formula for the conjugate base of each of the following acids.HF
Give the conjugate base of the following Bronsted-Lowry acid: NH4+.
Relative strengths of select conjugate acid-base pairs. The two members of each pair are listed opposite each other in the two columns.If ions O2- are added to water, what reaction, if any, occurs?
Label each of the following as being a strong base, a weak base, or a species with negligible basicity. In each case write the formula of its conjugate acid, and indicate whether the conjugate acid is a strong acid, a weak acid, or a species with negligible acidity.Label HCO3- as being a strong base, a weak base, or a species with negligible basicity.
Label each of the following as being a strong base, a weak base, or a species with negligible basicity. In each case write the formula of its conjugate acid, and indicate whether the conjugate acid is a strong acid, a weak acid, or a species with negligible acidity.Label O2- as being a strong base, a weak base, or a species with negligible basicity.
Label each of the following as being a strong base, a weak base, or a species with negligible basicity. In each case write the formula of its conjugate acid, and indicate whether the conjugate acid is a strong acid, a weak acid, or a species with negligible acidity.Label NH3 as being a strong base, a weak base, or a species with negligible basicity.
For NH4+, write an equation that shows how the cation acts as an acid.
For the following reaction, define each of the species as acid, base, conjugate acid, and conjugate base. H 2SO 4  +  H 2O  →  H 3O +  +  HSO 4 − A) Acid  +  Base  →  Conjugate Base  +   Conjugate Acid B) Base  +  Acid  →  Conjugate Base  +  Conjugate Acid C) Base  +  Acid  →  Conjugate Acid  +  Conjugate Base D) Acid  +  Base  →  Conjugate Acid  +  Conjugate Base E) These aren't acids and bases.  
Identify the conjugate acid of SO42–.a. H2SO4b. HSO4–c. H2SO3d. H3O+e.  SO32–
Write an equation to show how HCO 3- can act as an acid with HS - acting as a base.
The equation below shows the equilibrium in an aqueous solution of methylamine: CH3NH2(aq) + H2O(l) ⇌ CH3NH3+(aq) + OH-(aq) Which of the following represents a conjugate acid-base pair? a) CH3NH2 and H2O b) CH3NH3+ and OH- c) H2O and OH- d) CH3NH2 and OH-
Write the formula for the conjugate acid of each of the following bases. Express your answer as a chemical formula.a. C2H5NH2b. ClO4-c. HPO42-d. HCO3-
The pKa of HCN is 9.31 and that of HF is 3.46. Which is the stronger Brønsted base, CN- or F-? Select the single best answer.a. CN-, because HCN is a stronger acid than HF.b. CN-, because HCN is a weaker acid than HF.c. F-, because HCN is a stronger acid than HF.d. F-, because HCN is a weaker acid than HF.
For C7H5O2−, write an equation that shows how the anion acts as a base. Express your answer as a chemical equation. Identify all of the phases in your answer.
Using the data in the table, which of the conjugate acids below is the weakest acid? A) NH 3CH 3 + B) H 3NOH + C) C 5H 5NH + D) NH 4 + E) NH 4 + and NH 3CH 3 +
Identify the conjugate acid of CO32- and the conjugate base of HSO4- in the following reaction:HSO4-(aq) + CO32-(aq) ⇌ HCO3-(aq) +SO42-(aq)a. H2CO3 and H2SO4b. HCO3- and SO42-c. HCO3- and H2SO4d. H2CO3 and HSO4-e. none of the above
(i) Give the formula of the conjugate base of HSO 4-.  (ii) Give the formula for the conjugate acid of HSO 4-.
The stronger the acid, then which of the following is TRUE?A) The stronger the conjugate acid. B) The stronger the conjugate base.C) The weaker the conjugate base.D) The weaker the conjugate acid.E) None of the above.
Write an equation to show how HCO 3- can act as an acid with HS - acting as a base.
What is the conjugate acid of HPO 22-? 
Write the formula for the conjugate base of each of the following acids:a. CH2ClCOOHb. HIO4c. H2SO4d. NH4+ Write the formula for the conjugate acid for each of the following bases:e. CO32-f. HPO42-g. HSO4-h. HS- 
The stronger the acid, the weaker its conjugate base. This is known as the:a. Kekule statementb. The reverse relationshipc. The inverse relationshipd. The acid-base relationshipe. The weak acid relationship
Acetic acid, HC2H3O2, is a weak acid that is in equilibrium in the following given reaction: HC2H3O2(aq) + H2O(l) ⇌ H3O+(aq) + CH3CO2-(aq) a. Identify the acid and its conjugate base in the reaction above b. Identify the base and its conjugate acid in the reaction above c. Which way will the equilibrium shift if a strong acid is added to the system? d. If a strong base is added to the solution, which way will the equilibrium shift?
What is the conjugate base of the Brønsted-Lowry acid H3PO4 ?
Consider the following reaction: HCO3-(aq) + H2O(l) ⇌ H2CO3(aq) + OH -(aq) Which of the following statements is TRUE? a) HCO3- is not an acid and thus the equation is incorrect. b) The reaction of HCO3- with H2O produces H3O+ rather than OH - c) HCO3- is the base and H2O is the acid. d) HCO3- is the acid and OH - is its conjugate base. e) H2O is the base and H2CO3 is its conjugate acid
Consider three generic acids with the following relative strength is: HX > HY > HZ.Rank the strengths of their conjugate bases.
Identify all the acids and bases in the following reaction.  HSO4-(aq) + CO32- (aq) ⇌ SO42- (aq)+ HCO3-(aq).
What is the conjugate acid of HPO 22-?
Which of the following is not a conjugate acid-base pair?a. H2O, HO-b. H2O, H3O+c. HSO4-, H2SO4d. OH-, O2-e. NO3-, NO2-
What is the conjugate acid of O 2-? 1. O- 2. H2O 3. HOOH 4. OH2- 5. OH-
Choose the label to the appropriate target. Acid, Base, Conjugate Acid, Conjugate Base.
What are the conjugate bases of the following:HCO3-H2C2O4
What is the conjugate acid of H 2PO4-(aq)? a) H3O+ b) PO43- c) H3PO4 d) HPO42- e) H3P
H2CO3(aq) + H2O(l) ⇌ HCO3–(aq) + H3O+(aq) HCO3–(aq) + H2O(l) ⇌ CO32–(aq) + H3O+(aq) According to the equations above, what is the conjugate base of HCO 3–?  a) H2CO3(aq) b) H2O(l) c) H3O+(aq) d) CO32–(aq)
What is the conjugate acid of NH 3? What is the conjugate base of HSO4- ?
The following equation shows the equilibrium in an aqueous solution of ethylamine: C2H5NH2(aq) + H2O(l) ⇌ C2H5NH3+(aq) + OH−(aq) Which of the following represents a conjugate acid-base pair? a) C2H5NH2 and H2O b) C2H5NH3+ and OH− c) H2O and OH− d) C2H5NH2 and OH−
Write the formula for the conjugate acid of C 2H3O2-.
Give the formula of the conjugate acid:(a) NH3
Give the formula of the conjugate acid:(b) NH2−
Give the formula of the conjugate acid:(c) nicotine, C10H14N2
Give the formula of the conjugate acid:(a) O2−
Give the formula of the conjugate acid:(b) SO42−
Give the formula of the conjugate acid:(c) H2O
Match the following bases with the correct conjugate acid.  
Write the formula for the conjugate acid of each of the following bases.NH3
Give the conjugate acid for each compound below. a) H2PO4 - b) CO3 2- c) NH3
You may want to reference (Pages 727 - 729)section 16.3 while completing this problem.Write the formula for the conjugate acid of each of the following bases.ClO4–
Give the conjugate acid for each compound below. Base           Conjugate Acid HSO4- CO32- NH3
You may want to reference (Pages 727 - 729)section 16.3 while completing this problem.Write the formula for the conjugate acid of each of the following bases.HSO4–
Write the formula for the conjugate acid of each of the following bases.CO3 2 - 
What is the conjugate acid of H2C6H7O5–(aq)?
Write the formula of the conjugate acid of each of the following bases:NH3ClO3-SO43-OH-
Which base, CH3NH2 or (CH3)2NH, is the stronger base? Which conjugate acid, (CH3)2 NH2 + or (CH3)2 NH3 + , is the stronger acid?
What are the Conjugate Acids of (CH 3)3N, HSO4-, [Al(H2O)3(OH)3]?
What is a conjugate acid-base pair for the following equilibrium? H2O(l) + NH4+(aq) ⇌ NH3(aq) + H3O+(aq) a. H20 is an acid and H3O+ is its conjugate base b. NH4+ is an acid and NH3 is its conjugate base c. H20 is an acid and NH3 is its conjugate base d. H2O is a base and NH3 is its conjugate acid e. H2O is a base and NH4+ is its conjugate acid
Write the formulas of the conjugate base of the following acids: a. HNO2 b. H2SO4 c. H2S d. HCN e. HCOOH
Pick the stronger base from each of the following pairs. a. ClO− or ClO4−b.Cl− or H2Oc. NO2− or ClO−
Give the formula of the conjugate base:(a) HCl
Give the formula of the conjugate base:(b) H2CO3
Give the formula of the conjugate base:(a) HPO42—
What is the conjugate base of HS-? a. H2S- b. S- c. S2- d. H2S
Which of the following is the strongest base?a. NO3-b. F-c. Cl-d. ClO4-e. H2O
What is the conjugate base of H2C6H7O5–(aq)?
Label each of the following as being a strong acid, a weak acid, or a species with negligible acidity. In each case write the formula of its conjugate base, and indicate whether the conjugate base is a strong base, a weak base, or a species with negligible basicity.Write the formula of the conjugate base for HNO2.
Label each of the following as being a strong acid, a weak acid, or a species with negligible acidity. In each case write the formula of its conjugate base, and indicate whether the conjugate base is a strong base, a weak base, or a species with negligible basicity.Write the formula of the conjugate base for HPO42-.
Label each of the following as being a strong acid, a weak acid, or a species with negligible acidity. In each case write the formula of its conjugate base, and indicate whether the conjugate base is a strong base, a weak base, or a species with negligible basicity.Write the formula of the conjugate base for CH3NH3+ (an ion related to NH4+).
Which one of the following is the conjugate base of NH 3? a. H+ b. NH4+ c. NH2- d. NH3-
From the following equation, label the acid, base, and conjugate pair:(b) HClO4 + H2SO4 ⥫⥬ ClO4− + H3SO4+
From the following equation, label the acid, base, and conjugate pair:(a) NH3 + HNO3 ⥫⥬ NH4+ + NO3−
From the following equation, label the acid, base, and conjugate pair:(c) NH4+ + BrO3− ⥫⥬ NH3 + HBrO3
For each of the following aqueous reactions, identify the acid, the base, the conjugate base, and the conjugate acid.b. H2O + HONH3+ ⇌ HONH2 + H3O+
For each of the following aqueous reactions, identify the acid, the base, the conjugate base, and the conjugate acid.c. HOCl + C6H5NH2 ⇌ OCl - + C6H5NH3+
Write balanced net ionic equation for the following reaction, and label the conjugate acid-base pair:(b) 2NH4Cl(aq) + Ba(OH)2(aq) ⥫⥬ 2H2O(l) + BaCl2(aq) + 2NH3(aq)
For each of the following, identify the Bronsted-Lowry acid, the Bronsted-Lowry base, the conjugate acid, and the conjugate base.a. H2CO3(aq) + H2O(l) ⇌ H3O+(aq) + HCO3– (aq)b. NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH–(aq)c. HNO3(aq) + H2O(l) ⇌ H3O+(aq) + NO3–(aq)d. C5H5N(aq) + H2O(l) ⇌ C5H5NH+(aq) + OH–(aq)
Benzoic acid (C6H5COOH) and aniline (C6H5NH2) are both derivatives of benzene. Benzoic acid is an acid with Ka = 6.3 x 10-5 and aniline is a base with Kb = 4.3 x 10-10.What are the conjugate base of benzoic acid and the conjugate acid of aniline?
Which pair is a Brønsted-Lowry conjugate acid-base pair?a) NH3; NH4+b) H3O+; OH–c) HCl; HBrd) ClO4–; ClO3–
Designate the Bronsted-Lowry acid and the Bronsted-Lowry base on the left side of each of the following equations, and also designate the conjugate acid and conjugate base on the right side:HCHO2 (aq) + PO43-(aq) ⇌ HCOO-(aq) + HPO42-(aq)
What is the conjugate acid of the following? What is the conjugate base of each?(f) H2O2
What is the conjugate acid of the following? What is the conjugate base of each?(c) PH3
What is the conjugate acid of the following? What is the conjugate base of each?(g) H4N2
What is the conjugate acid of the following? What is the conjugate base of each?(h) CH3OH
Identify and label the Brønsted-Lowry acid, its conjugate base, the Brønsted-Lowry base, and its conjugate acid in the following equation:(c) HS− + H2 O ⟶ H2 S + OH−
Which pair is not a conjugate acid-base pair?(a) (CH3)3N; (CH3)3NH+ (b) H2SO4; H2SO3(c) HNO2; NO2–
Which the following represent conjugate acid–base pair? For the pair that is not conjugate, write the correct conjugate acid or base for the species in the pair.a. H2O, OH-
Given that HClO4 is a strong acid, how would you classify the basicity of ClO4-?
Consider the base hydroxylamine, NH2OH.What is the conjugate acid of hydroxylamine?
Label each of the following as being a strong base, a weak base, or a species with negligible basicity. In each case write the formula of its conjugate acid, and indicate whether the conjugate acid is a strong acid, a weak acid, or a species with negligible acidity.Write the formula of O2- conjugate acid
Write the formula for the conjugate base of each of the following acids.HCHO2
The CH3- ion is the conjugate base of CH4, and CH4 shows no evidence of being an acid in water.Write a balanced equation for the reaction of CH3- and water.
Consider the reaction below.HClO3 + NH3 → NH4+ + ClO3-Which is a base-conjugate acid pair?
Consider the reaction below.H2PO4- + H2O → H3O+ + HPO42-Which of the following is a base-conjugate acid pair?
Consider the reaction below.NH4+ + H2O → NH3 + H3O+Which is an acid-conjugate base pair?
Consider the reaction below.HF + H2O → H3O+ + F -Which is an acid-conjugate base pair?
Consider the reaction below.HI + H2O → H3O+ + I -Which is an acid-conjugate base pair?
What is the conjugate base of HSO 3− and HPO22−?Express your answer as a chemical formula. 
What is the conjugate acid of CO 32– in the reactionCO32– + HSO4- ⇌ HCO3– + SO42–A) HCO3–             B) HSO4–                C) OH–                D) H3O+              E) SO42–
What is the conjugate acid of HCO 3-?A) H3O+B) H2OC) CO32-D) OH-E) H2CO3
Give the conjugate base of the following Bronsted-Lowry acid: HIO3.
Which of the following acids will have the strongest conjugate base?a. HCN   b. HCl c. HClO4 d. HNO3 e. HI
Complete this Bronsted-Lowry reaction, placing each product by its appropriate label. 
Give the conjugate base for each compound below:
Give the conjugate acid for each compound below:
What is the conjugate acid of HN2-?(a) N3-(b) H2N-(c) H3N(d) HN2-(e) H4N+(f) None of these choices is correct.
Identify the conjugate base of formic acid (HCOOH).a) HCOOH2+b) HCOOc) HCOO-d) -COOHComplete the balanced equation for the reaction that occurs when formic acid (HCOOH) dissolves in water. Please include the state of matter for all chemical species.HCOOH (aq) + H2O (l)  ⇌
Give the conjugate base for each compound below.
Give the conjugate acid and base of HSO3-?a) H3SO3, SO32-b) HSO3-,HSO3-c) H2SO3, SO32-d) SO32-, H2SO3e) HSO3, SO32-
What is the conjugate acid of HPO 32-?
Write the formula for the conjugate base of each of the following acids.HNO2H2SO3HCHO2HClO
Write an equation to show how HCO 3- can act as a base with HS - acting as an acid.
The conjugate acid of HPO42- isa) H2PO4b) H3PO4c) PO43-d) PO42-e) H2PO4-
Predict the products of the following acid base reaction (include all inorganic coproducts, draw each compound only once): +NH3CH2COOH + 2 -OH ⇌
Write the formula of the conjugate base to the following species regarded as an acid: CH3COOH. 
Predict the products of the following acid-base reaction: (CH3)3+NH + -OH ⇌
What is the conjugate acid of CH 3NH2? a. CH3NH3 b. CH3NH+ c. CH3NH3+ d. CH3NH3- e. CH3NH- f. CH3NH
The conjugate base of hydroiodic acid dissolved in water is:a. H3O+b. OH-c. I2d. HIe. I-  
Write the formula of the conjugate acid to the following species regarded as a base: HASO42-. 
Draw the conjugate acid for the following base. Remember to include charges and non-bonding electrons where necessary. Cl-
What is the correct conjugate acid-base pair in the following reaction: HNO3 + N2H4 ⇌ NO3- + N2H5+a. HNO3, N2H4b. N2H4, NO3-c. N2H4, N2H5+d. HNO3, N2H5+ 
What is a correct conjugate acid-base pair in the following reaction: NH3 + N2H5+ ⇌ NH4+ + N2H4a. NH3, N2H4b. NH3, NH4+c. NH4+, N2H5+d. NH4+, N2H4 
In the following reaction, HCO3- (aq) + H2O (l) ⇌ CO32- (aq) + H3O+ (aq) a. H3O+ is an acid and HCO3- is its conjugate base. b. HCO3- is an acid and CO32- is its conjugate base. c. HCO3- is an acid and H2O is its conjugate base. d. H2O is an acid and CO32- is its conjugate base. e. H3O+ is an acid and CO32- is its conjugate base.