Assertion :Degree of hydrolysis and $p H$ of a salt say ${N H}_{4} C N$ is independent of concentration of ${N H}_{4} C N$ Reason: The solution of ${N H}_{4} C N$ in water has $p H$ slightly greater than $7$

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
As we know, ${N H}_{4} O H$ is relatively stronger than $H C N$ so pH of solution would be slightly greater than 7.
Also, the degree of hydrolysis of a salt of weak acid and weak base is independent of concentration of salt.

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