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At 298 K the standard free energy of for...

At 298 K the standard free energy of formation of `H_(2)O` (l) is `-237.20` kJ/"mole" while `DeltaG^(@)` of its ionisation into `H^(+)` ion and hydroxyl ionosis `80kJ//"mole"`, then the emf of the following cell at 298 K will be:
`H-92)(g,1bar)| H^(+)(1 M) || OH^(-)(1M) | O_(2)(g,1bar)`

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