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Assertion: 0.1 M NaCN+0.05 M HCl solutio...

Assertion: `0.1 M NaCN+0.05 M HCl` solution on mixing in equal volume forms a buffer solution.
Reason : The solution after mixing contains a weak acid and its conjugate base and thus acts as buffer.

A

If both the assertion and reason are true and reason is the true explanation of the assertion.

B

If both the assertion and reason are true but the reason is not the correct explanation of assertion.

C

If the assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
`underset(0.05)underset(0.1)(NaCN)+underset(0)underset(0.05)(HCl) rarr underset(0.05)underset(0)(NaCl)+underset(0.05)underset(0)(HCN)`
The solution contains a weak acid `HCN` and its conjugate base `CN^(-)` and thus acts as buffer.
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