In a concentration cell the same reactants are present in both the anode and the cathode compart...

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In a concentration cell the same reactants are present in both the anode and the cathode compartments, but at different concentrations. Calculate the emf of a cell containing \( 0.040 \mathrm{~M} . \mathrm{Cr}^{3+} \) in one compartment and \( 1.0 \mathrm{~M} \mathrm{~Cr}^{3+} \) in the other if \( \mathrm{Cr} \) electrodes are used in both.
(A) \( 0.028 \mathrm{~V} \)
(B) \( 0.249 \mathrm{~V} \)
(C) \( 0.083 \mathrm{~V} \)
(D) \( 0.125 \mathrm{~V} \)
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