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Emf of a cell corresponding to the react...

Emf of a cell corresponding to the reaction:-
`Zn(s) +2H^(+) (aq) rarr Zn^(2+)(aq) [0.1M] +H_(2)(g) [1.0atm]` is `0.49V` at `25^(@)C, E_(Zn^(2+)//Zn)^(@) = - 0.76 V`.
The `pH` of solution in cathode chamber is.

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