Question: A chemist is developing a titration analysis for lactic acid. Lactic acid is a monoprotic acid with K a = 8.4 10 -4 .

A chemist is developing a titration analysis for lactic acid. Lactic acid is a monoprotic acid with K_a = 8.4 × 10^-4. Calculate the pH at the equivalence point of a titration of 100 mL of 0.100 M lactic acid with 0.500 M NaOH. Suggest an indicator from Table 16.4, and explain why you chose it.

Table 16.4 A chemist is developing a titration analysis for lactic acid. Lactic acid

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