Chemistry

Problem

What ratio of

\text{Pb}^{2+}

\text{Sn}^{2+}

concentration is needed to reverse the following cell reaction?

\text{Sn}(s) + \text{Pb}(aq.)^{2+} \rightleftharpoons \text{Sn}(aq.)^{2+} + \text{Pb}(s)

E_{\text{Sn}^{2+}/\text{Sn}}^\circ = -0.136\text{V} \quad \text{and} \quad E_{\text{Pb}^{2+}/\text{Pb}}^\circ = -0.126\text{V}