Chemistry

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}

? a.

0.34 \text{ V}

-0.6925 \text{ V}

+0.6925 \text{ V}

-0.66 \text{ V}