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At 25^(@)C , the free energy of formatio...

At `25^(@)C` , the free energy of formation of `H_(2)O(l)` is `-56,700 Cal mol^(-1)`. The free energy of ionization of water to `H^(o+)` and `overset(c-)(O)H` is `19050 cal mol^(-1)`. What is the reversible `EMF` of the following cell at `25^(@)C:`
`H_(2)(g)(1 atm)|H^(o+)||overset(c-)(O)H,O_(2)(g),1atm`

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