Question

Given the standard potentials $E^o\left(C{u}^{2+}/Cu\right)$ and $E^o\left(C{u}^{+}/Cu\right)$ as $0.340$V and $0.522$V respectively, the value of $E^o\left(C{u}^{2+}/C{u}^{+}\right)$ is:

• A. $0.364$V
• B. $0.158$V
• C. $-0.182$V
• D. $-0.316$V

Answer 1

The correct option is C $-0.182$V

Ans ; C

Standered potential

$2e^{-}+C{u}^{2+}\to Cu$ 0,340 v

$e^{-}+C{u}^{+}\to Cu$ 0.522 v

$Cu\to C{u}^{+}+e^{-}$ -0.522 v

$e^{-}+C{u}^{2+}\to C{u}^{+}$ -0.522+0.340 = -0.182 v