Efficiency of a fuel cell is and the standard heat of reaction is

CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

Efficiency of a fuel cell is

80\%

and the standard heat of reaction is

-300 \text{ kJ}

. The reaction involves two electrons in redox change. The

E^\circ

for the cell is : (1)

1.24 \text{ V}

(2)

2.48 \text{ V}

(3)

0 \text{ V}

(4)

0.62 \text{ V}