Chemistry

Problem

E_1^\bullet

is standard electrode potential for

\text{Fe} / \text{Fe}^{2+}

and

E_2^\bullet

is for

\text{Fe}^{2+} / \text{Fe}^{3+}

and

E_3^\bullet

for

\text{Fe} / \text{Fe}^{3+}

. Derive a relation between

E_1^\bullet

E_2^\bullet

and

E_3^\bullet