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When 2mol of HCI is added to 1L of an ac...

When `2mol` of `HCI` is added to `1L` of an acidic buffer, its `pH` changes from `3.4` to `2.9`. The buffer capacity of the buffer solution is

A

`2`

B

`0`

C

`4`

D

`8`

Text Solution

Verified by Experts

The correct Answer is:
C
Buffer capacity
`= ("Number of moles/litre of acid or base added")/("change in pH or pOH")`
`= (2)/(3.4 -2.9) = (2)/(0.5) = 4`
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