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Ka for CH3COOH is 1.8xx10^(-5) and Kb fo...

`K_a` for `CH_3COOH` is `1.8xx10^(-5)` and `K_b` for `NH_4OH` is `1.8xx10^(-5)` The pH of ammonium acetate will be :

A

7.005

B

4.75

C

`7.0`

D

between 6 and 7.

Text Solution

Verified by Experts

The correct Answer is:
C
`CH_(3)CO ONH_(4)` is a salt of weak acid and weak base. Hence,
`pH = 7 + (1)/(2) (pK_(a) - pK_(b))=7+0=7`
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