JEE Main Chemistry question

Statement 1: Acetylene forms acetylide but ethylene does not. Statement 2: Acetylene is lighter than air.

(A)Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
(B)Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1Correct
(C)Statement 1 is True, Statement 2 is False
(D)Statement 1 is False, Statement 2 is True

Answer: (B)

Solution

Acetylene's terminal C–H hydrogens are acidic (-hybridised carbon, 50% -character) and are readily replaced by Ag or Cu to form acetylides; ethylene has no such acidic hydrogen and forms no acetylide — Statement 1 is true. Acetylene

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Question ID VK-142351