Chemistry

Problem

A cell is to be constructed to show a redox change :

\text{Cr} + 2\text{Cr}^{3+} \rightleftharpoons 3\text{Cr}^{2+}

. The number of cells with different

E^\circ

and 'n' but same value of

\Delta G^\circ

can be made: (Given,

E_{\text{Cr}^{3+}/\text{Cr}^{2+}}^\circ = -0.40 \text{ V}

E_{\text{Cr}^{3+}/\text{Cr}}^\circ = -0.74 \text{ V}

and

E_{\text{Cr}^{2+}/\text{Cr}}^\circ = -0.91 \text{ V}

) a. 1 b. 2 c. 3 d. 4