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5 December, 13:13

What is the ph of a solution that is. 75 m in sodium acetate and. 50 m in acetic acid? (ka for acetic acid is 1.8*10^-5?

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  1. 5 December, 13:42
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    4.921.

    Explanation:

    It is an acidic buffer solution;

    ∵ pH = pKa + log[salt]/[acid].

    ∴ pH = - log (1,8 x 10⁻⁵) + log[0.75/0.50] = 4.745 + 0.1761 = 4.921.
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