A) nucleophilic substitution mechanism
B) electrophilic addition mechanism
C) free radical mechanism
D) electrophilic substitution reaction
Correct Answer: C
Solution :
The Kolbes electrolysis proceeds via free radical mechanism. For example, when sodium propionate is electrolysed, n-butane, ethane, ethylene are obtained. The propionate ion discharges at the anode to form free radicals. \[{{C}_{2}}{{H}_{5}}CO{{O}^{-}}\to {{C}_{2}}{{H}_{5}}CO{{O}^{o}}+{{e}^{-}}\] \[{{C}_{2}}{{H}_{5}}CO{{O}^{o}}\to {{C}_{2}}{{H}_{5}}^{o}+C{{O}_{2}}\] \[2{{C}_{2}}H_{5}^{o}\to {{C}_{4}}{{H}_{10}}\] \[{{C}_{2}}H_{5}^{o}+{{C}_{2}}H_{5}^{o}\to {{C}_{2}}{{H}_{4}}+{{C}_{2}}{{H}_{6}}\]
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