What is the pH of CH3COO–NH4+ salt? Given Ka of CH3COOH = 1.8 * 10–6 Kb of NH4OH = 1.8 * 10–6 (At 25°C)

p H = p K w + p K a ? p K b 2 pKa = pKb p H = p K w 2 = 7

What is the pH of CH₃COO^–NH⁴⁺ salt?

            **Given K_a of CH₃COOH = 1.8 * 10^–6

                       K_b of NH₄OH = 1.8 * 10^–6

            (At 25°C)**

Option 1 - 7

Option 2 - 9

Option 3 - 8.9

Option 4 - 7.8

1 Views|Posted 4 months ago

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Alok Kumar Singh | Contributor-Level 10

4 months ago

Correct Option - 1

Detailed Solution:

$p H = \frac{p K_{w} + p K_{a} ? p K_{b}}{2}$

pK_a = pK_b

$p H = \frac{p K_{w}}{2} = 7$

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