Statement 1: Acetylene is converted into formic acid with cold and alkaline KMnO_4. Statement 2: Acetylene is converted into formic acid with rupture of the triple bond at high temperature.

JEE Main Chemistry question

Statement 1: Acetylene is converted into formic acid with cold and alkaline KMnO. Statement 2: Acetylene is converted into formic acid with rupture of the triple bond at high temperature.

(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

Cold, dilute, alkaline KMnO performs mild oxidative cleavage of acetylene's triple bond, giving oxalic acid first and, on more vigorous/hot alkaline permanganate treatment, formic acid/CO — Statement 1 is true (mild, cold conditions already suffice for some formic-acid-type cleavage products in practice). Hot

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Question ID VK-142446