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The pK(a) of acetic acid and pK(b) of am...

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.

Text Solution

Verified by Experts

For a salt of weak acid and weak base
`pH=7+1/2(pK_a + pK_b)`
`=7+1/2 (4.76-4.75)`
`=7+1/2(0.01)`
=7+0.005 =7.005
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