What is for the reaction : in the half cell if is and of ?

CHEMISTRY · Single correct · A Level · Chemistry · Electrode potentials · Electrode potentials

Problem

What is

E_{RP}

for the reaction :

\text{Cu}^{2+} + 2e^- \rightarrow \text{Cu}

in the half cell

\text{Pt}_{S^{2-}/\text{CuS}/\text{Cu}}

E_{\text{Cu}^{2+}/\text{Cu}}^\circ

0.34 \text{ V}

and

K_{sp}

\text{CuS} = 10^{-35}

? (1)

0.34 \text{ V}

(2)

-0.6925 \text{ V}

(3)

+0.6925 \text{ V}

(4)

-0.66 \text{ V}