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A 100 mL 0.1m solution of ammonium nitra...

A 100 mL 0.1m solution of ammonium nitrate is diluted by adding 100 ml of water. The pH of the resulting solution will be (`pK_a` of acetic acid is nearly equal of `NH_4OH` )

A

4.9

B

`5.0`

C

`7.0`

D

`10.0`

Text Solution

Verified by Experts

The correct Answer is:
C
Hydrolysis of a salt of weak acid and weak base
`pH = 7 + (1)/(2)(pK_(a) -pK_(b)) = 7`
as `pK_(a) ~~ pK_(b)`.
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