1.

Standard free energies of formation (in kJ/mol) at 298 K are 237.2, -394.4 and -8.2 for `H_(2)O(l),CO_(2)(g)` and pentane (g), respectively. The value of `E_(cell)^(o)` for the pentane-oxygen fuel cell isA. 1.0968VB. 0.0968C. 1.968VD. 2.0968V

Answer» Correct Answer - C
`C_(5)H_(12)+8O_(2)to5CO_(2)+6H_(2)O`
`DeltaG^(@)=-5xx394.4-6xx237.2+8.2`
`DeltaG^(@)=-nFE_(Cell)^(@)`
`-3387kJ//`mole


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