11. Which is a Lewis acid-base reaction but not a Bronsted-Lowry acid-base reaction? [a] NH3)+BF%)→ H₂NBF3(g) [b] NHS) + H₂O → NH4+(aq) + OH-(aq) [c] CH3NH2(aq) + HBr(aq) → CH3NH3(aq) + + Br-(aq) [d] CH3COOH(aq) + H₂O)→ CH3COO-(aq) + H3O+ (aq) [e] NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O0) 12. The pH of a 0.100 M solution of a weak acid, HA, is 3.50. Calculate the percent ionization of the acid in 0.100 M solution. a. 0.016% b. 0.078% c. 0.32% d. 0.68% e. 1.6% 13. Calculate the pH of a solution resulting from the addition of 20.0 mL of 0.100 MHCI to 50.0 mL of 0.100 MNH3. a. 9.26 b. 4.91 c. 9.44 d. 4.60 e. 9.08 14. Which of the following formulas represents an alkane? (5 points) A. C₂H4 B. C3H7 C. C4H10 D. C5Hg 15. The half-life of 231 Pa is 3.25 x 104 y. How much of an initial 10.40 microgram sample remains after 3.25 x 105 y? a. 0.0102 µg b. 0.240 µg c. 0.0240 μg d. 1.02 µg e. 1.04 µg 6 E. C6H6 16. A

11. Which is a Lewis acid-base reaction but not a Bronsted-Lowry acid-base reaction? [a] NH3)+BF%)→ H₂NBF3(g) [b] NHS) + H₂O → NH4+(aq) + OH-(aq) [c] CH3NH2(aq) + HBr(aq) → CH3NH3(aq) + + Br-(aq) [d] CH3COOH(aq) + H₂O)→ CH3COO-(aq) + H3O+ (aq) [e] NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O0) 12. The pH of a 0.100 M solution of a weak acid, HA, is 3.50. Calculate the percent ionization of the acid in 0.100 M solution. a. 0.016% b. 0.078% c. 0.32% d. 0.68% e. 1.6% 13. Calculate the pH of a solution resulting from the addition of 20.0 mL of 0.100 MHCI to 50.0 mL of 0.100 MNH3. a. 9.26 b. 4.91 c. 9.44 d. 4.60 e. 9.08 14. Which of the following formulas represents an alkane? (5 points) A. C₂H4 B. C3H7 C. C4H10 D. C5Hg 15. The half-life of 231 Pa is 3.25 x 104 y. How much of an initial 10.40 microgram sample remains after 3.25 x 105 y? a. 0.0102 µg b. 0.240 µg c. 0.0240 μg d. 1.02 µg e. 1.04 µg 6 E. C6H6 16. A

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter21: The Chemistry Of The Main Group Elements

Section: Chapter Questions

Problem 118IL

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