In a fuel cell methanol is used as a fuel and oxygen is used as an oxidising the reaction is
ch3oh(l) + 3/2 O2 (g) ———> CO2(g) + 2 H2O(l)
At 298 K standard Gibbs energy of formation of methanol, H2O and CO2 are - 166.2, - 237.2 and -394.4 KJmole-1 respectively. If standard enthalpy of combustion of methanol is - 76 kilo joule per mole efficiency of fuel cell will be?