Which statement is incorrect?

Engineering

Chemistry

Electrolysis

Preparation of Alkyl Halide

IUPAC Nomenclature of Organic Compound

Question

Which statement is incorrect?

A

CO₂ gas liberates at anode in Kolbe electrolytes of aqueous CH₃COOK.

B

Benzene liberates at anode on Kolbe electrolysis of aqueous Ph–COONa

C

Anhydrous ether should be used in Wurtz reaction.

D

C₂H₆ can be prepared by Wurtz reaction.

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Kolbe electrolysis involves decarboxylation of carboxylate ions, producing hydrocarbons at the anode. For aqueous CH₃COOK, the reaction is: $2 {CH}_{3} COO - \to C_{2} H_{6} + 2 {CO}_{2} + 2 e^{-}$ . CO₂ is a product, not liberated at the anode; electrons are. The Wurtz reaction, $2 R - X + 2 Na \to R - R + 2 NaX$ , requires anhydrous ether to prevent sodium from reacting with water and produces alkanes like C₂H₆ from CH₃I. Electrolysis of Ph-COONa gives biphenyl, not benzene.

Final Answer: The first statement is incorrect; CO₂ is a product, but it is not liberated at the anode—electrons are.