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Q.

Which of the following is relatively stronger acid ?

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a

HCN

b

HF

c

H2S

d

CH3COOH

answer is C.

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Detailed Solution

Because it has the biggest Ka, HF is the strongest. The smallest Ka in the group makes hydrocyanic the weakest member. In comparison to the other acids, HF will therefore dissociate more readily in water.

Therefore, the correct answer is option (C ) HF.

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