At 25°C \(pK_a\) of CH\(_3\)COOH is 4.76 and \(pK_b\) of NH\(_4\)OH is 4.75. The pH of 1 M CH\(_3\)COONH\(_4\) is found to be 7.005. What will be the pH of 2 M CH\(_3\)COONH\(_4\) solution at the same temperature?
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For salts of weak acid + weak base, pH is independent of concentration when \(pK_a \approx pK_b\).