Q. If $E_{1}^{\circ}$ is standard electrode potential for $Fe / Fe ^{2+}$ and $E_{2}^{\circ}$ is for $Fe ^{2+} / Fe _{3+}$ and $E_{3}^{\circ}$ for $Fe ^{2} / Fe ^{3+}$. A relation between $E_{1}^{\circ}$. $E_{2}^{\circ}$ and $E_{3}^{\circ}$ is:
Electrochemistry
Solution:
Correct answer is (a) $3 E_{3}^{\circ}=2 E_{1}^{\circ}+E_{2}^{\circ}$
