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The `pK_(a)` of acetic acid and `pK_(b)` of ammonium hydroxide are `4.76` and `4.75` respectively. Calculate the pH of ammonium acetate solution.
A. 4.765
B. 5.012
C. 7.005
D. 6.098

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Correct Answer - C
`pH = 7 +(1)/(2)[pK_(a)-pK_(b)] = 7 +(1)/(2)[4.76 - 4.75] = 7.005`

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