Question

The Kolbe's electrolysis proceeds via

• A. Nucleophilic substitution mechanism
• B. Electrophilic addition mechanism
• C. Free radical mechanism
• D. Electrophilic substitution reaction

Answer 1

Answer: (C)

Free radical mechanism

Answer 2

For example, when sodium propionate is electrolysed, $n$-butane. ethane; ethylene are obtained. The propionate ion discharges at the anode to form a free radical.