3. Chemical Reactions
Balancing Chemical Equations
3. Chemical Reactions
Balancing Chemical Equations - Video Tutorials & Practice Problems
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Balancing Chemical Equations
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Balancing Chemical Equations
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example
Balancing Chemical Equations Example 1
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Problem
ProblemWrite the balanced equation for the following by inserting the correct coefficients in the blanks.
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Problem
ProblemDetermine the total sum of the coefficients after balancing the following equation.
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Problem
ProblemDetermine the balanced chemical equation when ethanol, C2H6O is ignited in the presence of air.
A
C2H6O + 4 H2O → 5 CO2 + 7 CO
B
C2H6O + 2 O3 → 2 CO2 + 3 H2O
C
C2H6O + 3 O2 → 2 CO2 + 3 H2O
D
C2H6O + 3 O2 → 5 CO2 + 4 H2O
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PRACTICE PROBLEMS AND ACTIVITIES (134)
- The reaction of A2 (red spheres) with B2 (blue spheres) is shown in the diagram. What is the balanced chemical...
- The reaction between reactant A (blue spheres) and reactant B (red spheres) is shown in the following diagram:...
- What are the coefficients in the balanced equation for the combustion of ethanol? (LO 3.2) (a) 1, 3, 2, 3 (b)...
- The following diagram shows the combination reaction between hydrogen, H2, and carbon monoxide, CO, to produce...
- The following diagram shows the combination reaction between hydrogen, H2, and carbon monoxide, CO, to produce...
- Nitrogen 1N22 and hydrogen 1H22 react to form ammonia 1NH32. Consider the mixture of N2 and H2 shown in the ac...
- Write 'true' or 'false' for each statement. (a) We balance chemical equations as we do because energy must be ...
- A key step in balancing chemical equations is correctly identifying the formulas of the reactants and products...
- Balance the following equations: (c) Al(OH)31s2 + H2SO41l2¡Al2(SO4)3(s) + H2O(l)
- Balance the following equations: (d) Na2CO31aq2 + HCl1aq2¡NaCl1aq2 + H2O1l2 + CO2(g)
- Balance the following equations: (c) Ba3N21s2 + H2O1aq2¡Ba(OH)21aq2 + NH31g2
- Balance the following equations: (b) Au2S31s2 + H21g2¡Au1s2 + H2S1g2
- Balance the following equations: (b) NH31g2 + O21g2¡NO1g2 + H2O1g2
- Balance the following equations: (c) MnO21s2 + HCl1aq2 ¡MnCl21s2 + H2O1l2 + Cl2(g)
- Balance the following equations: (b) Cu1s2 + HNO31aq2¡Cu(NO3)21aq2 + NO21g) + H2O(l)
- Balance the following equations: (d) KOH1aq2 + H3PO41aq2 ¡K3PO41aq2 + H2O1l2
- Write balanced chemical equations corresponding to each of the following descriptions: (c) When hydrogen ga...
- Write balanced chemical equations to correspond to each of the following descriptions: (d) When solid mercury(...
- Write balanced chemical equations to correspond to each of the following descriptions: (c) Phosphine, PH31g2, ...
- Write balanced chemical equations to correspond to each of the following descriptions: (b) Boron sulfide, B2S3...
- (c) What is the sum of the coefficients in the balanced chemical equation for the combustion of one mole of ac...
- Write a balanced chemical equation for the reaction that occurs when (d) dimethylether, CH3OCH31g2, is combust...
- Write a balanced chemical equation for the reaction that occurs when (c) the hydrocarbon styrene, C8H81l2, is...
- Write a balanced chemical equation for the reaction that occurs when (b) barium carbonate decomposes into ba...
- Write a balanced chemical equation for the reaction that occurs when (b) silver(I) oxide decomposes into sil...
- At 900 °C, titanium tetrachloride vapor reacts with molten magnesium metal to form solid titanium metal and mo...
- The diagrams represent a reaction on the molecular level. Atoms of A are represented with red spheres, and ato...
- Which of the following equations is balanced? (a) The development reaction in silver-halide photography: 2 A...
- Which of the following equations is balanced? Balance any that need it. (a) The thermite reaction, used in wel...
- Balance the following equations. (d) UO2 + HF --> UF4 + H2O
- Balance the following equations. (c) S + O2 --> SO3
- Balance the following equations. (b) CaC2 + H2O --> Ca(OH)2 + C2H2
- Balance the following equations. (a) Mg + HNO3 --> H2 + Mg(NO3)2
- Find the limiting reactant for each initial amount of reactants. 4 Al(s) + 3 O2( g)¡2 Al2O3(s) a. 1 mol Al, 1 ...
- Balance the following equations. (c) The burning of rocket fuel: C2H8N2 + N2O4 --> N2 + CO2 + H2O
- Balance the following equations. (b) The spoilage of wine into vinegar: C2H6O + O2 --> C2H4O2 + H2O
- Balance the following equations. (a) The explosion of ammonium nitrate: NH4NO3 --> N2 + O2 + H2O
- The following reaction is exothermic: (a) Write a balanced equation for the reaction (red spheres represent A ...
- Balance the following equations. (d) NO2 + H2O --> HNO3 + NO
- Balance the following equations. (c) CaCN2 + H2O --> CaCO3 + NH3
- Balance the following equations. (b) P4O10 + H2O --> H3PO4
- Balance the following equations. (a) SiCl4 + H2O --> SiO2 + HCl
- Balance the following equations. (a) VCl3 + Na + CO --> V(CO)6 + NaCl
- Balance the following equations. (c) NH4ClO4 + Al --> Al2O3 + N2 + Cl2 + H2O
- Balance the following equations. (b) Au + H2SeO4 --> Au2(SeO4)3 + H2SeO3 + H2O
- Balance the following equations. (a) C6H5NO2 + O2 --> CO2 + H2O + NO2
- The following reaction of A3 molecules is spontaneous. (a) Write a balanced equation for the reaction.
- Balance the following equations. (a) CO(NH2)2(aq) + HOCl(aq) --> NCl3(aq) + CO2(aq) + H2O(l)
- Balance the following equations. (b) Ca3(PO4)2(s) + SiO2(s) + C(s) --> P4(g) + CaSiO3(l) + CO(g)
- The following pictures represent the initial state and the equilibrium state for the reaction of A2 molecules ...
- Complete and balance each hydrocarbon combustion reaction. b.CH3CH2CH'CH2 +O2 ¡
- Complete and balance each hydrocarbon combustion reaction. c. CH‚CCH2CH3 + O2 ¡
- The following pictures represent equilibrium mixtures at 325 K and 350 K for a reaction involving A atoms (red...
- The following pictures represent the initial and equilibrium states for the exothermic decomposition of gaseou...
- The following pictures represent the initial and equilibrium states for the exothermic reaction of solid A (re...
- A 1.50-g sample of quinone 1C6H4O22 is burned in a bomb calorimeter whose total heat capacity is 8.500 kJ>°...
- A 2.20-g sample of phenol 1C6H5OH2 was burned in a bomb calorimeter whose total heat capacity is 11.90 kJ>°...
- Chlorine reacts with oxygen to form Cl2O7. (b) Write a balanced equation for the formation of Cl2O71l2 from t...
- Magnesium metal burns in oxygen to form magnesium oxide, MgO. (a) Write a balanced equation for the reaction.
- Calcium hydride reacts with water to form calcium hydroxide and hydrogen gas. (a) Write a balanced chemical eq...
- Consider the mixture of propane, C3H8, and O2 shown here. (a) Write a balanced equation for the combustion rea...
- Diethyl ether, C4H10O1l2, a flammable compound that was once used as a surgical anesthetic, has the structure ...
- Write balanced complete ionic and net ionic equations for each reaction. b. MgS(aq) + CuCl2(aq)¡CuS(s) + MgC...
- The reaction of tungsten hexachloride (WCl6) with bismuth gives hexatungsten dodecachloride (W6Cl12). WCl6 + B...
- Write balanced chemical equations for (a) the complete combustion of acetone (CH3COCH3), a common organic so...
- Write the balanced chemical equation for the reaction of solid lithium with liquid water.
- Write a balanced equation for the synthesis of the 2–6 semiconductor ZnTe by chemical vapor deposition from d...
- During photosynthesis, plants use energy from sunlight to form glucose (C6H12O6) and oxygen from carbon dioxid...
- The ionic substance strontium oxide, SrO, forms from the reaction of strontium metal with molecular oxygen. Th...
- The fluoride ion reacts with water to produce HF. (a) Write out the chemical equation for this reaction.
- Sulfuric acid is a component of acid rain formed when gaseous sulfur dioxide pollutant reacts with gaseous oxy...
- Nitric acid is a component of acid rain that forms when gaseous nitrogen dioxide pollutant reacts with gaseous...
- When iron rusts, solid iron reacts with gaseous oxygen to form solid iron(III) oxide. Write the balanced chemi...
- Write the balanced chemical equation for the fermentation of sucrose (C12H22O11) by yeasts in which the aqueou...
- Write the balanced chemical equation for each reaction. c. Aqueous hydrochloric acid reacts with solid mangane...
- Write the balanced chemical equation for each reaction. a. Solid lead(II) sulfide reacts with aqueous hydrobro...
- Write the balanced chemical equation for each reaction. d. Liquid pentane (C5H12) reacts with gaseous oxygen t...
- Write the balanced chemical equation for each reaction. b. Gaseous carbon monoxide reacts with hydrogen gas to...
- Write the balanced chemical equation for each reaction. d. Gaseous ammonia (NH3) reacts with gaseous oxygen to...
- Write the balanced chemical equation for each reaction. a. Solid copper reacts with solid sulfur to form solid...
- Write the balanced chemical equation for each reaction. b. Solid iron(III) oxide reacts with hydrogen gas to f...
- Write the balanced chemical equation for the reaction of aqueous potassium hydroxide with aqueous iron(III) ch...
- Balance each chemical equation. b. Co(NO3)3(aq) + (NH4)2S(aq)¡Co2S3(s) + NH4NO3(aq)
- Predict the products and write a balanced molecular equation for each reaction. If no reaction occurs, write '...
- Sulfur tetrafluoride 1SF42 reacts slowly with O2 to form sulfur tetrafluoride monoxide 1OSF42 according to th...
- One of the most bizarre reactions in chemistry is called the Ugi reaction: R1C(=O)R2 + R3 - NH2 + R4COOH + R5N...
- Isooctane, C8H18, is the component of gasoline from which the term octane rating derives. (a) Write a balanced...
- When solid mercury(I) carbonate, Hg2CO3, is added to nitric acid, HNO3, a reaction occurs to give mercury(II) ...
- When 10.0 g of a mixture of Ca1ClO322 and Ca1ClO22 is heated to 700 °C in a 10.0-L vessel, both compounds de...
- When a gaseous compound X containing only C, H, and O is burned in O2, 1 volume of the unknown gas reacts with...
- Isooctane, C8H18, is the component of gasoline from which the term octane rating derives. (a) Write a balanced...
- Chemical explosions are characterized by the instantaneous release of large quantities of hot gases, which se...
- Combustion analysis of 0.1500 g of methyl tert-butyl ether, an octane booster used in gasoline, gave 0.3744 g ...
- Element M is prepared industrially by a two-step procedure according to the following (unbalanced) equations: ...
- Acid spills are often neutralized with sodium carbonate or sodium hydrogen carbonate. For neutralization of ac...
- For each molecule of C4H8 that reacts, how many molecules of carbon dioxide and water are produced?
- H3PO4 + Mg(OH)2 → Mg3(PO4)2 + H2O
- For the following balanced equation, which has the highest coefficient? 4 H2 + 2 C → 2 CH4
- Write a balanced equation to show the reaction of aqueous aluminum acetate with aqueous ammonium phosphate to ...
- Enter a balanced chemical equation for the reaction of solid potassium with liquid water.
- Write and balance the equation for the decomposition of aluminum chloride into its elements. phase symbols are...
- When aluminum, Al, metal is dipped in an aqueous solution of hydrochloric acid, HCl, hydrogen gas, H2, is prod...
- Write a balanced chemical equation based on the following description: nitrogen gas and oxygen gas react to pr...
- The figure (figure 1) shows the reaction of element a (lavender spheres) with element b (tan spheres). write t...
- What is the coefficient in front of the no when the equation below is balanced? NH3(g) + O2(g) → NO(g) + H2O(g...
- Write a balanced chemical equation based on the following description: propanol, C3H7OH(l) burns in air to pro...
- Write a balanced equation to show the reaction of gaseous ethane with gaseous oxygen to form carbon monoxide g...
- Solid iron(iii) oxide reacts with hydrogen gas to form solid iron and liquid water.
- When iron rusts, solid iron reacts with gaseous oxygen to form solid iron(iii) oxide.
- Write the balanced chemical equation for the reaction shown.
- When the following equation is balanced the coefficients are
- Liquid octane reacts with oxygen gas to form carbon dioxide gas and water vapor.
- Gaseous carbon monoxide reacts with hydrogen gas to form gaseous methane (ch4) and liquid water.
- Solid aluminum sulfide reacts with water to form solid aluminum hydroxide and gaseous hydrogen sulfide.
- How many moles of o2 are in the chemical equation when balanced using the lowest whole numbers?
- Write the balanced chemical equation for the reaction, using lowest whole-number coefficients.
- The scientific principle which is the basis for balancing chemical equations is
- Which sequence of coefficients should be placed in the blanks to balance this equation?
- Add coefficients to the following reaction summary
- Na2SO3 represents sodium sulfite. What does the 4 mean in the formula 4 Na2SO3?
- Which coefficient of O2 is needed to balance the equation C3H8 + O2 → 3 CO2 + 4 H2O?
- Which are the products in the equation CH3SH + 4 O2 → CO2 + SO2 + 2 H2O? Check all that apply.
- When balanced, which equation would have the coefficient 3 in front of any of the reactants?
- Based on your experience in the simulation, what do the numbers 3 and 4 refer to in 3 NH4?
- The equilibrium system between hydrogen gas, bromine gas, and hydrogen bromide gas is given.
- When balancing a chemical equation, which of the following is/are permissible?
- When H2SO4 is neutralized by NaOH in aqueous solution, the net ionic equation is ________.
- Write a balanced ionic equation for this acid-base reaction: Ca(OH)2(aq) + 2 CH3CO2H(aq) →
- How does a balanced chemical equation show that mass is never lost or gained in a chemical reaction?
- In a chemical equation, the symbol (aq) indicates that the substance is
- Balance the chemical reaction equation P4(s) + Cl2(g) → PCl5(g)
- How do you use the coefficient to calculate the number of atoms in each molecule
- Which of the following balanced equations correctly represents the dissociation of K2SO4 in water?
- How does a chemical equation show that matter is always conserved in a chemical reaction?