A handbook lists the following formula for the percent ionization of a weak acid. (a) Derive this

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A handbook lists the following formula for the percent ionization of a weak acid.

% ionized = 100 1 + 10(PK-pH)

(a) Derive this equation. What assumptions must you make in this derivation?

(b) Use the equation to determine the percent ionization of a formic acid solution, HCOOH(aq), with a pH of 2.50.

(c) A 0.150 M solution of propionic acid, CH3CH2COOH, has a pH of 2.85. What is Ka for propionic acid?

CH3CHCOH + H0 H3O+ + CH3CHCO

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General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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