1.
Given E^\circCr3+/Cr_{Cr^{3+}/Cr} = -0.72 V, E^\circFe2+/Fe_{Fe^{2+}/Fe} = -0.42 V. The potential for the cell Cr|Cr3+^{3+}(0.1 M)||Fe2+^{2+}(0.01 M)|Fe is: