(A): In the Kolbe's electrolysis of two moles of ${\mathrm{CH}}_3\mathrm{COOK}$ in aqueous solution, 89.6 lit of gases evolved at 1atm pressure and 273K.

(R): Kolbe's electrolysis of aqueous solution of${\mathrm{CH}}_3\mathrm{COOK}$ involves free radical mechanism