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My text book lists "ordinary vinegar" as having a pH of 2.4.

My text book lists "ordinary vinegar" as having a pH of 2.4. Using the data from the attached problem find the concentration of acetic acid in vinegar.

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Find the pH of a 0.2M solution of acetic acid. Ka for acetic acid is 1.8 x 10-5.
From the ionization of acetic acid,
CH3COOH = CH3COO- + H+

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