10826 AP Chemistry Chemical Equations Worksheet
10826 AP Chemistry Chemical Equations Worksheet 10826 AP Chemistry Chemical Equations Worksheet
(cc) Solid lithium hydride is added to distilled water.LiH + H 2O → Li + + OH – + H 2(dd) Benzene is treated with bromine in the presence of acatalyst.Br 2+ C 6H 6→ C 6H 5Br + HBr(ee) Solid lithium oxide is added to excess water.Li 2O + H 2O → 2Li + + 2OH –(ff) Solid potassium chlorate is heated in the presence ofmanganese dioxide as a catalyst.MnO2KClO 23⎯⎯→ 2KCl + 3O 2(gg) Dilute hydrochloric acid is added to a solution ofpotassium sulfite.Is the final solution acidic, basic or neutral? Explain.Answer: Basic. Metallic hydrides react with water toform metallic hydroxides.Classify the type of organic reaction that takes place.Answer: This is a substitution reaction.Is the final solution acidic, basic or neutral? Explain.Answer: Basic. Soluble metal oxides react in water toform bases (metallic hydroxides).How many moles of reaction products can be producedfrom one mole of potassium chlorate?Answer: 2½ moles.List all spectator ions.Answer: Potassium, K + , and chloride, Cl – .2H + + SO 32–→ H 2O + SO 2(hh) A solution of sulfuric acid is added to a solution ofbarium hydroxide until the same number of moles ofeach compound has been added.2H + + SO2–4+ Ba 2+ + 2OH – → BaSO 4+ 2H 2O(ii) A mixture of solid calcium oxide and solid tetraphosphorusdecaoxide is heated.6CaO + P 4O 10→ 2Ca 3(PO 4) 2(jj) Sulfur dioxide gas is passed over solid calciumoxide.Is the final solution acidic, basic or neutral? Explain.Answer: Neutral. The neutralization of a strong base[Ba(OH) 2] by a strong acid [H 2SO 4] yields aneutral solution.Is the product compound(s) soluble in water?Answer: No. Phosphates other than those of group 1elements and NH+4are insoluble.Name the product compound(s).Answer: Calcium sulfite.SO 2+ CaO → CaSO 3(kk) Solid zinc sulfide is heated in an excess of oxygen.2ZnS + 3O 2→ 2ZnO + 2SO 2(ll) A solution of potassium iodide is added to an acidifiedsolution of potassium dichromate.6I – + 14H + + Cr 2O2–7→ 3I 2+ 2Cr 3+ + 7H 2OWhat change in oxidation state does sulfur undergo in thisreaction?Answer: Sulfur starts out as –2 in ZnS and ends up as+4 in SO 2. The charge is +6.What is the reducing agent in this reaction?Answer: The species that undergoes oxidation, in thiscase iodide ion, I – , is the reducing agent.– 8 –Publication No. 10826Your Safer Source for Science Supplies© 2007 Flinn Scientific, Inc. All Rights Reserved.(800) 452-1261 • Fax: (866) 452-1436 • P.O. Box 219 • Batavia, IL 60510 • E-mail: flinn@flinnsci.com • www.flinnsci.com
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(cc) Solid lithium hydride is added to distilled water.LiH + H 2O → Li + + OH – + H 2(dd) Benzene is treated with bromine in the presence of acatalyst.Br 2+ C 6H 6→ C 6H 5Br + HBr(ee) Solid lithium oxide is added to excess water.Li 2O + H 2O → 2Li + + 2OH –(ff) Solid potassium chlorate is heated in the presence ofmanganese dioxide as a catalyst.MnO2KClO 23⎯⎯→ 2KCl + 3O 2(gg) Dilute hydrochloric acid is added to a solution ofpotassium sulfite.Is the final solution acidic, basic or neutral? Explain.Answer: Basic. Metallic hydrides react with water toform metallic hydroxides.Classify the type of organic reaction that takes place.Answer: This is a substitution reaction.Is the final solution acidic, basic or neutral? Explain.Answer: Basic. Soluble metal oxides react in water toform bases (metallic hydroxides).How many moles of reaction products can be producedfrom one mole of potassium chlorate?Answer: 2½ moles.List all spectator ions.Answer: Potassium, K + , and chloride, Cl – .2H + + SO 32–→ H 2O + SO 2(hh) A solution of sulfuric acid is added to a solution ofbarium hydroxide until the same number of moles ofeach compound has been added.2H + + SO2–4+ Ba 2+ + 2OH – → BaSO 4+ 2H 2O(ii) A mixture of solid calcium oxide and solid tetraphosphorusdecaoxide is heated.6CaO + P 4O 10→ 2Ca 3(PO 4) 2(jj) Sulfur dioxide gas is passed over solid calciumoxide.Is the final solution acidic, basic or neutral? Explain.Answer: Neutral. The neutralization of a strong base[Ba(OH) 2] by a strong acid [H 2SO 4] yields aneutral solution.Is the product compound(s) soluble in water?Answer: No. Phosphates other than those of group 1elements and NH+4are insoluble.Name the product compound(s).Answer: Calcium sulfite.SO 2+ CaO → CaSO 3(kk) Solid zinc sulfide is heated in an excess of oxygen.2ZnS + 3O 2→ 2ZnO + 2SO 2(ll) A solution of potassium iodide is added to an acidifiedsolution of potassium dichromate.6I – + 14H + + Cr 2O2–7→ 3I 2+ 2Cr 3+ + 7H 2OWhat change in oxidation state does sulfur undergo in thisreaction?Answer: Sulfur starts out as –2 in ZnS and ends up as+4 in SO 2. The charge is +6.What is the reducing agent in this reaction?Answer: The species that undergoes oxidation, in thiscase iodide ion, I – , is the reducing agent.– 8 –Publication No. <strong>10826</strong>Your Safer Source for Science Supplies© 2007 Flinn Scientific, Inc. All Rights Reserved.(800) 452-1261 • Fax: (866) 452-1436 • P.O. Box 219 • Batavia, IL 60510 • E-mail: flinn@flinnsci.com • www.flinnsci.com
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