Refer to the tabulated values of ΔG°f in Appendix IIB to calculate E°cell for the fuel cell breathalyzer, which employs the following reaction. (ΔG°f for HC2H3O2(g) = -374.2 kJ/mol.)
CH3CH2OH(g) + O2(g) → HC2H3O2(g) + H2O(g)
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