Chemistry Chapter 15 Acids and Bases Part 2

1. Identify the INCORRECT statement below: a) Acids typically have a sour taste. b) Acids typically have a slippery feeling. c) Muriatic acid is the common name for HCl(aq). d) The acid found in car batteries is sulfuric acid. e) The primary ingredient in "Drano" is sodium hydroxide. 2. According to Bronsted-Lowry theory, a base is defined as a: a) substance containing OH- ions. b) proton donor. c) electron pair donor. d) electron pair acceptor. e) proton acceptor. 3. In terms of acid strength, which pair are ranked INCORRECTLY? a) H2Te > H2S b) H2SO4 > H2SO3 c) HCl > HI d) HClO4 > HClO3 e) HNO3 > HF 4. Which is an INCORRECT statement? a) The conjugate base of H2O is OH-. b) The conjugate acid of NH3 is NH4+. c) The conjugate base of HCO3- is H2CO3. d) The conjugate acid of H2O is H3O+. e) The conjugate base of HCN is CN-. 5. Which of the following is the MOST CORRECT net ion equation for the reaction of HCl and KOH in aqueous solution? a) HCl(aq) + KOH(aq) ---> KCl(aq) + H2O(l) b) H+(aq) + OH-(aq) ---> H2O(l) c) H+(aq) + KOH(aq) ---> K+(aq) + H2O(l) d) H+(aq) + Cl-(aq) + K+(aq) + OH-(aq) ---> KCl(s) + H2O(l) 6. Which of the following species would be the most basic substance in aqueous solution? a) ClO4b) HSO4c) Id) PO43e) NO37. How many moles of calcium hydroxide are present in 350 mL of a 0.010 M aqueous solution of Ca(OH)2? a) 35 b) 3.5 c) 0.010 d) 0.0035 e) 10.0 8. In Problem #7, what is the molar concentration of the hydroxide ion? a) zero b) 0.010 M c) 0.020 M d) 0.0050 M e) 0.0070 M 9. What is the H3O+ concentration in 1.0 M NaOH? a) 1.0 M b) 1.0 x 10-14 M c) 1.0 x 1014 M d) 1.0 x 10-7 M 10. What is the OH- concentration in a neutral aqueous solution? a) exactly zero b) 1.0 x 10-14 M c) 7.0 M d) 1.0 M e) 1.0 x 10-7 M 11. The following acids are listed in order of decreasing acid strength in water. According to the Brønsted-Lowry theory, which one of the following anions is the weakest base? HI > HNO2 > CH3COOH > HCN a) NO2b) CNc) Id) CH3COO12. Which of the following is an INCORRECT statement about acid/base theories? a) Lowry-Bronsted theory does not account for the acidic properties of BCl3. b) According to Lewis theory, a base is an electron pair acceptor. c) According to Lowry-Bronsted theory, an acid/base reaction involves proton transfer. d) According to Arrhenius, a base contains OH_ ions and releases them to solution. e) According to Lowry-Bronsted theory, an acid is a proton donor. 13. Which one of the following pairs of acids is INCORRECTLY listed? (Stronger Acid; Weaker Acid) a) HNO3; HNO2 b) H2SO3; H2SeO3 c) HClO4; HIO4 d) HClO; HClO2 e) H2SO4; H2SO3 14. Which of the following is the net ionic equation for the acid-base reaction of H2CO3 with Sr(OH)2 ? a) H2CO3 + Sr2+ + 2 OH- ---> SrCO3 + 2 H2O b) H3O+ + OH- ---> 2 H2O c) H2CO3 + Sr(OH)2 ---> 2 H2O + Sr2+ + CO32d) 2 H3O+ + Sr2+ + 2 OH- ---> Sr2+ + 4 H2O e) H2CO3 + 2 OH- ---> 2 H2O + CO3215. Which one of the following compounds is INCORRECTLY classified? a) (C2H5)2NH; weak base b) HCN; weak acid c) Fe(OH)2; soluble base d) Sr(OH)2; soluble, strong base e) Cr(OH)3; insoluble base 16. Which of the following does NOT represent a conjugate acid-base pair? a) HCl / Clb) HNO3 / NO3c) H3O+ / OHd) H2O / OHe) NH4+ / NH3 17.The conjugate base of ammonia is: a) NH4+ b) OHc) NH2OH d) NH2e) NH3 18.The conjugate acid of OH- is: a) H2O b) H+ c) O2d) OHe) H3O+ 19.All of the following are strong bases except: a) NH2OH b) RbOH c) LiOH d) KOH e) Ba(OH)2 20. Which of the following is the strongest acid? a) HNO2 b) H2SO3 c) HNO3 d) HCN e) H3PO4 21. Which of the following is the strongest acid? a) H2O b) H2Te c) CH4 d) H2Se e) H2S 22. Which one of the following could NOT be a Bronsted-Lowry acid? a) H2O b) HN3 c) H3O+ d) NH4+ e) BF3 23. Which pair of acids would each react with barium hydroxide and have the net ionic equation: H+ + OH- ---> H2O a) HCl and HNO2 b) HBr and HF c) HCl and HNO3 d) HNO3 and H2CO3 e) HClO4 and H2SO4 24. According to the Lewis theory, which one of the following compounds would be expected to react as a Lewis acid, but not as a Lewis base? a) BCl3 b) NH3 c) PH3 d) H2O e) all of these 25. Based on the reactions we have studied, ammonia can be considered as __________. a) an Arrhenius base (only) b) a Lewis base (only) c) a Bronsted-Lowry base (only) d) both an Arrhenius base and a Lewis base e) both a Bronsted-Lowry base and a Lewis base 26. Which of the following is the strongest acid that can exist in water solution? a) HNO3 b) HClO4 c) HClO d) H3O+ e) HC2H3O2 27. What is the H3O+ concentration in 1.0 M NaOH? a) 1.0 M b) 1.0 x 10-14 M c) 1.0 x 1014 M d) 1.0 x 10-7 M 28. What is the OH- concentration in a neutral aqueous solution? a) exactly zero b) 1.0 x 10-14 M c) 7.0 M d) 1.0 M e) 1.0 x 10-7 M 29. What is the hydronium ion concentration in a solution which is 0.10 M HNO3(aq)? a) 0.30 M b) 0.10 M c) 6.7 x 10-3 M d) 1.0 x 10-7 M e) 2.1 x 10-2 M 30. What is the hydroxide ion concentration in 1.0 M HBr? a) 1.0 M b) 1.0 x 10-13 M c) 1.0 x 10-14 M d) 1.0 x 10-7 M 31. What is the pH of 1.0 x 10-3 M aqueous HClO4? a) 10-7 b) -3.0 c) 0.0 d) 3.0 e) 1.0 32. What is the hydronium ion concentration in a solution which has [OH-] = 1.0 x 10- 2 M? a) 1.0 x 10-12 M b) 1.0 x 10-2 M c) 1.0 x 10-16 M d) 12 e) 1.0 x 10-7 M 33. Identify the INCORRECT statement: a) As the pH increases the hydroxide ion decreases. b) As the pH increases the hydronium ion concentration decreases. c) As the pH increases the Kw of water remains the same. d) As the pH increases the product [H3O+][OH-] remains constant. e) As the pH increases the solution becomes less acidic and more alkaline. 34. Identify the most INCORRECT statement: a) Blood has a pH near 7. b) Stomach juices have a pH near 2. c) Vinegar has a pH near 10. d) Glass cleaner has a pH near 12. e) Drano has a pH near 14. 35. Which acid is the weakest acid? Refer to the tables. a) HCN b) 3 HNO2 c) HAc d) HOCl e) HF KEY 1)b 2)e 3)c 4)c 5)b 6)d 7)d 8)c 9)b 10)e 11)c 12)b 13)d 14)a 15)c 16)c 17)d 18)a 19)a 20)c 21)b 22)e 23)c 24)a 25)e 26)d 27)b 28)e 29)b 30)c 31)d 32)a 33)a 34)c 35)a