Practice Exam Chapter 13 PDF

Practice Exam Chapter 13 1. Which of these are properties of acids? I. Sour II. Turn litmus blue III. Dissolve some metals IV. Slippery a. I only b. III only c. I and II d. I and III e. II, III and IV ANSWER: d 2. Which of...

Practice Exam Chapter 13 1. Which of these are properties of acids? I. Sour II. Turn litmus blue III. Dissolve some metals IV. Slippery a. I only b. III only c. I and II d. I and III e. II, III and IV ANSWER: d 2. Which of these substances is a base? a. NaHCO3 b. HCl c. HNO3 d. H3PO4 e. CH3COOH ANSWER: a 3. Which of these substances is an acid? a. NaHCO3 b. NaOH c. NH3 d. KOH e. CH3COOH ANSWER: e 4. Which of these is the best definition of an Arrehenius base? a. Any substance that produces H+ ions in solution. b. Any substance that produces OH− ions in solution. c. Any substance that accepts a lone pair of electrons. d. Any substance that neutralizes an acid in solution. e. Any substance that accepts H+ ion in solution. ANSWER: b 5. Which of these is the best definition of a Bronsted-Lowry base? a. Any substance that produces H+ ions in solution. b. Any substance that produces OH− ions in solution. c. Any substance that accepts a lone pair of electrons. d. Any substance that neutralizes an acid in solution. e. Any substance that accepts H+ ion in solution. ANSWER: e 6. Which of these is the Bronsted-Lowry base in this chemical equation? HSO4− + OH− SO42− + H2O a. HSO4− b. H2O c. S d. OH− e. NH3 ANSWER: d 7. Which of these compounds cannot act as a Bronsted-Lowry acid? a. H3O+ b. H2O c. CH3COOH d. MgO e. NH3 ANSWER: d 8. Water can act as. a. a proton donor b. a proton acceptor c. either a proton donor or a proton acceptor  d. neither a proton donor nor a proton acceptor ANSWER: c 9. The formula of the hydroxide ion is: a. OH− b. OH+ c. H3O+ d. H3O− e. none of the above ANSWER: a 10. Which of these substances is a weak base? a. HCN b. CH3COOH c. HCl d. HCOOH e. C5H5N ANSWER: e 11. Which of these substances is a weak acid? a. NH3 b. HCOOH c. HCl d. HNO3 e. C5H5N ANSWER: b 12. Which of these statements concerning pure water is incorrect? a. The pH is 7 at 25 oC. b. It contains no ions. c. It is neutral. d. It can act as a proton acceptor. ANSWER: b 13. What is the pH of a 1.0 M solution of a strong base? a. 0 b. 1.00 c. 13.00  d. 14.00 e. Can’t tell from the given information. ANSWER: d 14. What is the pH of a 1.0 M solution of a weak acid? a. 0 b. 1.00 c. 13.00 d. 14.00 e. Can’t tell from the given information. ANSWER: e 15. Which of these has the smallest [H3O+]? a. pH = 2 b. pH = 5 c. pH = 7 d. pH = 11 e. pH = 13 ANSWER: e 16. Which of these statements concerning pH is incorrect? a. pH is based on the [H3O+] in solution. 13 b. If [H3O+] = 1.0 × 10− , then the solution is basic. c. pH = 3.0 is ten times more acidic than pH = 2. d. If the pH > 7 then the solution is basic. 7 e. Pure water has [H3O+] = 1.0 × 10−. ANSWER: c 17. Which of these acids is responsible for the tartness of vinegar? a. Muriatic b. Citric c. Sulfuric d. Acetic e. Benzoic ANSWER: d 18. Which of these is the active ingredient in aspirin? a. Salicylic acid b. Acetylsalicylic acid c. Acetic acid d. Lactic acid ANSWER: b 19. Which of these substances is most basic? a. Lemons b. Pure water c. Milk of magnesia d. Blood e. Wine ANSWER: c 20. Which of these acids is not found in wines? a. Lactic b. Citric c. Tartaric d. Acetic e. Salicylic ANSWER: e 21. Which of these acids is found in stomach acid? a. Malic b. Hydrochloric c. Phosphoric d. Acetic e. Lactic ANSWER: b 22. Which of these substances would have the lowest pH? a. 1.0 M CH3COOH b. 1.0 M HNO3 c. 1.0 M NH3 d. 1.0 M HCOOH e. 1.0 M NaOH ANSWER: b 23. Rank these compounds in increasing acidity (least acidic to most acidic). 1.0 M HCOOH, 1.0 M HCl, 1.0 M NH3 , 1.0 M NaOH a. 1.0 M HCOOH < 1.0 M HCl < 1.0 M NH3 < 1.0 M NaOH  b. 1.0 M NH3 < 1.0 M HCOOH < 1.0 M NaOH < 1.0 M HCl c. 1.0 M NaOH < 1.0 M NH3 < 1.0 M HCOOH < 1.0 M HCl d. 1.0 M NaOH < 1.0 M HCOOH < 1.0 M NH3 < 1.0 M HCl e. 1.0 M NH3 < 1.0 M NaOH < 1.0 M HCOOH < 1.0 M HCl ANSWER: c 24. Which of these pairs represent the products of this dissociation in water? Mg(OH)2 = + a. MgOH, H2 b. OH−, MgOH+ c. Mg+2, 2OH− d. Mg+, 2OH− e. OH2−, Mg+ ANSWER: c 25. Which of these is the primary ingredient in baking soda? a. NaOH b. Mg(OH)2 c. Al(OH)3 d. CaCO3 e. NaHCO3 ANSWER: e 26. Which of these equations best represents the reaction that takes place in the stomach when the antacid calcium carbonate is taken? a. NaHCO3 + H2O + CO b. CaCO3 = H2O + CO c. CO32− + 2H3O+ = 3H2O + CO2 d. Ca2+ + 2H3O+ = 3H2O + CaO e. CaCO3 + H3O+ = Ca(OH)2 + CO2 ANSWER: c 27. Which of these statements about acid rain is correct? a. Acid rain has destroyed all marine life in entire lakes. b. Acid rain slows the rate of tree growth. c. Acid rain accelerates the rusting process. d. Acid rain can effectively remove nutrients from soil. e. All of the above are correct. ANSWER: e 28. Rain is naturally acidic as a result of gas reacting with the water. a. SO2 b. CO2 c. NO2 d. Cl2 e. N2 ANSWER: b 29. Which of these gases is targeted by the 1990 Clean Air Act for a 50% reduction of emission by 2010? a. SO2 b. CO2 c. NO2 d. Cl2 e. N2 ANSWER: a 30. Which of these methods of reducing SO2 emissions employs spraying limestone and water in coal smokestacks? a. Crushing and washing b. Vaporizing and condensing c. Subliming d. Flue gas scrubbers e. None of these ANSWER: d 31. The combustion of which of these fuels is the most significant contributor in the formation of acid rain? a. Oil b. Coal c. Natural gas d. Geothermal e. Nuclear ANSWER: b