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Q 1921567421.     In the button cells widely used in watches and
other devices the following reaction takes place :
`Zn (s) + AgO(s) + H_2O(l) -> Zn^(2+)(aq) + 2Ag(s) + 2OH^- (aq)`
Determine `triangle_r G^⊖` and `E^⊖` for the reaction.
Given `Zn -> Zn^(2+) + 2e^-, E^o = 0.76 V;`
`Ag_2O + H_2O + 2e^- -> 2Ag + 2OH^-, E^o = 0.344 V`.
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)