Caffeine, C8H10N4O2 is a weak base. What is the value of Kb for caffeine if a solution at equilibrium has [C8H10N4O2] = 0.050 M, [C8 H10 N4 O2 H+] = 5.0 × 10−3 M, and [OH−] = 2.5 × 10−3 M?

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter13: Acids And Bases
Section: Chapter Questions
Problem 107QAP: What is the freezing point of vinegar, which is an aqueous solution of 5.00% acetic acid, HC2H3O2,...
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Caffeine, C8H10N4O2 is a weak base. What is the value of Kb for caffeine if a solution at equilibrium has [C8H10N4O2] = 0.050 M, [C8 H10 N4 O2 H+] = 5.0 × 10−3 M, and [OH] = 2.5 × 10−3 M?

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