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Aqueous solutions of HNO(3), KOH, CH(3)C...

Aqueous solutions of `HNO_(3), KOH, CH_(3)COOH`,and `CH_(3)COONa` of identical concentrations are provided. The pair (s) of solution which form a buffer upon mixing is// are

A

`HNO_(3)` and `CH_(3)COOH`

B

KOH and `CH_(3)COONa`

C

`HNO_(3)` and `CH_(3)COONa`

D

`CH_(3)COOH` and `CH_(3)COONa`

Text Solution

Verified by Experts

The correct Answer is:
C, D
`HNO_(3) + CH_(3)COONa` mixture can act as buffer solutions if volume of `HNO_(3)` solution taken is lesser than volume of `CH_(3)COONa` solution because of following reaction
`CH_(3)COONa+HNO_(3) rarr CH_(3)COOH + NaNO_(3)`
(d) `CH_(3)COOH + CH_(3)COONa`-mixture will act as buffer.
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