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: