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Which of the following pairs consitutes ...

Which of the following pairs consitutes buffer?

A

`HNO_(3)` and `NH_(4)NO_(3)`

B

HCI and KCI

C

`HNO_(2)` and `NaNO_(2)`

D

`NaOH` and `NaCI`

Text Solution

Verified by Experts

The correct Answer is:
C
It is an acidic buffer. `HNO_(2)` is a weak acid and `NaNO_(2)` is the salt of `HNO_(2)` with a strong base NaOH.
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