$ K_a $ for $ \text{CH}_3 \text{COOH} $ is $ 1.8 \times 10^{-5} $ and $ K_b $ for $ \text{NH}_4 \text{OH} $ is $ 1.8 \times 10^{-5} $. The pH of ammonium acetate solution will be:

Question

cdquestions Admin · Accepted Answer

The pH is given by: $\text{pH} = \frac{pK_a + pK_b}{2}$ Since $pK_a = pK_b$, $\text{pH} = \frac{7 + 7}{2} = 7$

\( K_a \) for \( \text{CH}_3 \text{COOH} \) is \( 1.8 \times 10^{-5} \) and \( K_b \) for \( \text{NH}_4 \text{OH} \) is \( 1.8 \times 10^{-5} \). The pH of ammonium acetate solution will be:

Correct Answer: 7

Solution and Explanation

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