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A galvanic cell which makes use of the following reaction at 298K. $Cr_2O_7^{2-}+14H^++6Fe^{2+}\rightarrow 2Cr^{3+}+6Fe^{3+}+7H_2O$.Given : $E^{\large\circ}(Cr_2O_7^{2-},H^+,Cr^{3+}|Pt)=1.33V;E^{\large\circ}(Fe^{3+},Fe^{2+}|Pt)=0.77V$.The cell emf is independent of

$\begin{array}{1 1}\text{temperature}\\\text{size of cell}\\ [Cr_2O_7^{2-} ]\\ [ Cr^{3+} ]\end{array} $

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Answer : size of cell
The cell emf is independent of the size of the cell.
answered Jul 21, 2014 by sreemathi.v

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