Aqueous solution of an organic compound, 'A' on electrolysis liberates acetylene and CO_2 at a node (anode). 'A' is [EAMCET 2007]

JEE Main Chemistry question

Aqueous solution of an organic compound, '' on electrolysis liberates acetylene and CO at a node (anode). '' is [EAMCET 2007]

(A)Potassium acetate
(B)Potassium succinate
(C)Potassium citrate
(D)Potassium maleateCorrect

Answer: (D)

Solution

Electrolysis of the potassium salt of an unsaturated dicarboxylic (maleic) acid proceeds by the Kolbe mechanism: each carboxylate loses CO at the anode to generate a radical; the two vinylic radicals from the HC=CH backbone combine/lose

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Question ID VK-142117