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The `pK_(a)` fo acetic acid and `pK_(b)` of ammonium hydroxide are 4.76 and 4.75 respectively . Calculate the pH of ammonium acetate solution .

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The `pK_(a)` fo acetic acid and `pK_(b)` of ammonium hydroxide are 4.76 and 4.75 respectively . Calculate the pH of ammonium acetate solution .
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As `CH_(3)CO ONH_(4) ` is a salt of weak acid, weak base,
`pH = 7 + (1)/(2) [pK_(a)-pK_(b)] = 7 + (1)/(2) (4.76-4.75) = 7 + 0.005 = 7. 005`
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