water a 1 only b 2 only c 3 only d 1 and 2 e 1 2 and 3 a 1 only b 2 only c 3 only d 1 and 2 e 2 and 3 Chapter 3 Chemical Reactions MULTIPLE CHOICE 1 Nitroglycerin decomposes violently according to the balanced chemical equation below 2 C3H5 NO3 3 Which of the following statements concerning this reaction is are CORRECT 3 N2 g 1 2 O2 g 6 CO2 g 5 H2O g 1 Two moles of nitroglycerine will produce three moles of nitrogen and five moles of 2 Four molecules of nitroglycerine will produced one molecule of oxygen and twelve water molecules of carbon dioxide 3 Six grams of nitroglycerine will produce nine grams of nitrogen and fifteen grams of 2 When propane undergoes complete combustion the products are carbon dioxide and water C3H8 g O2 g CO2 g H2O g What are the respective coefficients when the equation is balanced with the smallest whole numbers a 1 1 1 1 b 1 3 1 3 c 1 3 3 1 d 1 5 3 4 e 2 5 3 4 3 The reaction of elemental chlorine with potassium iodide yields elemental iodine and potassium chloride Write a balanced chemical equation for this reaction a Cl2 g KI s I s KCl2 s b Cl2 g 2 KI s I2 s 2 KCl s c Cl2 g KI2 s I2 s KCl2 s d Cl g KI s I s KCl s e Cl2 g 2 K2I s I2 s 2 K2Cl s 4 Which of the following statements is are CORRECT 1 All ionic compounds that are soluble in water are electrolytes 2 All ionic compounds dissolve in water 3 Molecular compounds are never soluble in water 5 Which of the following statements is are CORRECT 1 1 Most ionic compounds containing nitrate ion are soluble in water 2 Most ionic compounds containing sulfate ion are insoluble in water 3 Most ionic compounds containing carbonate ion are soluble in water 6 Which of the following compounds are soluble in water NH4NO3 Fe2S3 CuCO3 and SrCl2 7 If an aqueous solution of is added to a mixture of F and SO4 2 the fluoride ion will precipitate 8 What is the net ionic equation for the reaction of aqueous sodium hydroxide and aqueous iron II a 1 only b 2 only c 3 only d 1 and 2 e 1 2 and 3 a NH4NO3 only b NH4NO3 and Fe2S3 c Fe2S3 and CuCO3 d CuCO3 and SrCl2 e NH4NO3 and SrCl2 but the sulfate ion will remain in solution a LiBr b HNO3 c Pb ClO4 2 d MgNO3 e AlCl3 chloride a Na aq OH aq NaOH s b Na aq Cl aq NaCl s c Fe2 aq 2 OH aq Fe OH 2 s d Fe2 aq OH aq FeOH s e Fe2 aq 2 Cl aq FeCl2 s hydroxide a Na only b H and OH c Na and Br d Br only e H Br Na and OH 9 What are the spectator ions in the reaction between aqueous hydrobromic acid and aqueous sodium 10 Write a balanced chemical equation for the reaction of aqueous solutions of ammonium sulfate and NH4 2SO4 aq 2 NaOH aq 2 NH4OH aq SO3 g Na2O aq sodium hydroxide a b NH3 2SO4 aq NaOH aq 2 NH3 g NaOHSO4 aq c d NH4 2SO4 aq 2 NaOH aq 2 NH4 e NH3 2SO4 aq 2 NaOH aq 2 NH3 g Na2SO4 aq 2 OH aq g Na2SO4 aq 2 OH aq Na2SO4 aq NH4 2SO4 aq 2 NaOH aq 2 NH3 g 2 H2O 11 Which species in the reaction below undergoes reduction H2O g CO g H2 g CO2 g 2 a H2O b CO c H2 d CO2 e None a 1 b 0 c 3 d 5 e 7 12 What is the oxidation number of iodine in potassium iodate KIO3 13 What is the oxidation number of each atom in sulfurous acid H2SO3 14 All of the following are oxidation reduction reactions EXCEPT a H 1 S 2 O 2 b H 0 S 6 O 2 c H 0 S 0 O 0 d H 1 S 4 O 2 e H 1 S 8 O 2 a CaCO3 s CaO s CO2 g b 2 Na s Br2 g 2 NaBr g c Fe s 2 HCl aq FeCl2 aq H2 g d 2 C s O2 g 2 CO g e 2 H2O 2 H2 g O2 g 15 A n agent loses electrons in an oxidation reduction reaction SHORT ANSWER ANS reducing 16 acid is produced in a larger quantity than any other chemical in the United States This chemical is used in the production of fertilizers pigments alcohol paper and detergents ANS Sulfuric 17 The net ionic equation for the reaction of barium chloride and sodium sulfate is shown below 2 aq BaSO4 s Ba2 aq SO4 Chloride and sodium ions are referred to as ions because they are not involved in the reaction ANS spectator 18 If an aqueous sodium hydroxide solution is left in contact with air the concentration of hydroxide ion gradually decreases The process can be hastened if a person exhales over a sodium hydroxide solution Write a balanced chemical equation that describes the process by which the hydroxide ion concentration decreases ANS OH aq CO2 aq HCO3 aq 3