A cell reaction , Zn+2Fe^(3+)hArr2Fe^(2+...

A cell reaction , `Zn+2Fe^(3+)hArr2Fe^(2+)+Zn^(2+)`
works at `25^(@)C` with the emf 1.2 volt and at `45^(@)C` with the cell emf 1.718 volt. Assuming `DeltaS^(@)` to be constant in this temperature range calculate `DeltaS^(@)` approximately in `kJ//K`.

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A cell reaction , `Zn+2Fe^(3+)hArr2Fe^(2+)+Zn^(2+)` works at `25^(@)C` with the emf 1.2 volt and at `45^(@)C` with the cell emf 1.718 volt. Assuming `DeltaS^(@)` to be constant in this temperature range calculate `DeltaS^(@)` approximately in `kJ//K`.

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A cell reaction , `Zn+2Fe^(3+)hArr2Fe^(2+)+Zn^(2+)`
works at `25^(@)C` with the emf 1.2 volt and at `45^(@)C` with the cell emf 1.718 volt. Assuming `DeltaS^(@)` to be constant in this temperature range calculate `DeltaS^(@)` approximately in `kJ//K`.