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.

Assertion: `0.1 M NaCN+0.05 M HCl` solution on mixing in equal volume

1.	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.
Answer» Correct Answer - 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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