Assertion (A) : HCN is a weaker acid in water, when compared to that of ${CH}_{3} COOH$ in water.
Reason (R) : $P^{ka}$ of ${CH}_{3} COOH$ is more than that of HCN under identical conditions.

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Both A and R are false

Both A and R are true R is not the correct explanation of A

Both A and R are true, ‘R’ explains A

A is true and R is false

answer is D.

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Detailed Solution

More is the value of K_a, more is acidic in nature.

K_a for HCN and CH₃COOH are 4.9×10⁻¹⁰and 1.8×10⁻⁵ respectively.

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