Two weak acids, A and B, are each titrated with the same solution of a strong base,

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Two weak acids, A and B, are each titrated with the same solution of a strong base, producing the following titration curves.

pH 14 12 10 8 6 4 2 0 10 1 20 Acid A Acid B I 50 30 40 Volume of base added (mL) 60 70


(a) Which acid has a larger Ka value, A or B? Explain.

(b) Use the titration curves to estimate the pH at the equivalence point for each acid. Explain why these values are not the same.

(c) If equal volumes of Acid A and Acid B were used, which one had the higher initial concentration? Explain.

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Chemistry For Engineering Students

ISBN: 9780357026991

4th Edition

Authors: Lawrence S. Brown, Tom Holme

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