1. A solution of 0.055 M propanoic acid, HC3H5O2, has a pH of (3.06x10^0). What is the Ka for propanoic acid? Express your answer to three significant figures.

Chemistry & Chemical Reactivity
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Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter3: Chemical Reactions
Section3.6: Acids And Bases
Problem 3.5CYU
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1. A solution of 0.055 M propanoic acid, HC3H5O2, has a pH of (3.06x10^0). What is the Ka for propanoic acid? Express your answer to three significant figures.

2. Ethanolamine, HOC2H4NH2, is a viscous liquid with an ammonialike odor; it is used to remove hydrogen sulfide from natural gas. A 0.15 M aqueous solution of ethanolamine has a pH of (1.124x10^1). What is Kb for ethanolamine? Express your answer to three significant figures.

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