What is the approximate pka

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Problem- 10 mL of 1.8 M acetic acid (CH3COOH) is titrated with 1.0 M sodium hydroxide (NaOH). The titration curve is shown.

(a) What is the approximate pKa? (which 4.8 is what I have and it appears correct)

(b) At the pKa, what fraction of the carboxyl group will have been converted to COO-?

Express your answer as a decimal, and not a percent.

State your response as a chemical formula.

Reference no: EM13718570

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