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Calculate the emf of the cell Zn//ZnO(2)...

Calculate the emf of the cell `Zn//ZnO_(2)^(-), OH_((aq))^(-), HgO //Hg` given that `E^(@)` values of `OH^(-), ZnO_(2)^(-)//Zn and OH^(-), HgO //Hg` half cells are `-1.216V` and 0.098 V respectively.

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Hint : `E^(@)=E_(R)^(@)-E_(L)^(@),E^(@)=1.314V`
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