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1 lit of buffer solution contains 0.1 mo...

`1` lit of buffer solution contains `0.1` mole each of `NH_(4)OH` and `NH_(4)Cl`. What will be the `P^(H)` of the solution when `0.01` mole of `HCl` is added to it
[` P^(Kb)` of `NH_(4)OH = 4.74`]

A

`9.26`

B

`9.17`

C

`4.74`

D

`4.65`

Text Solution

Verified by Experts

The correct Answer is:
B
Due to addition of `0.01` moles of HCl
`NH_(4)OH + HCl rarr NH_(4)Cl + H_(2)O`
`[NH_(4)OH] = 0.1 - 0.1`
`[NH_(4)Cl] = 0.1 + 0.01`
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