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In a fuel cell methanol is used as fuel and oxygen gas is used as an oxidizer. The reaction is CH_(3)OH(l)+3/2O_(2)(g)toCO_(2)(g)+2H_(2)O(l) At 298 K standard Gibb’s energies of formation for CH_(3)OH(l),H_(2)O(l)andCO_(2)(g)" are "-166.2,-237.2and-394.4kJmol^(-1) respectively. If standard enthalpy of combustion of methanol is -726kJmol^(-1), efficiency of the fuel cell will be - |
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Answer» 0.87 |
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