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Q.

Assertion (A) : HCN is a weaker acid in water, when compared to that of CH3COOH in water.

Reason (R) : Pka of CH3COOH is more than that of HCN under identical conditions.

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a

Both A and R are false

b

A is true and R is false

c

Both A and R are true, ‘R’ explains A

d

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

answer is D.

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Detailed Solution

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

Ka for HCN and CH3​COOH are 4.9×10−10 and 1.8×10−5 respectively.

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