First slide

Ionization constants of weak acids, PH of weak acids

Question

$P^{H} of 0.1 M {CH}_{3} COOH is (K_{a} = 10^{- 5})$

Easy

Solution

$\begin{array}{l} [H^{+}] = \sqrt{{CK}_{a}} \\ = \sqrt{0 .1 \times 10^{- 5}} = 10^{- 3} P^{H} = 3 \end{array}$

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