Given that $\mathrm{E}^{0}\left(\mathrm{Pb}^{2+} / \mathrm{Pb}\right)$ is -0.126 V , the value of $\mathrm{E}^{0}\left(\mathrm{Sn}^{2+} / \mathrm{Sn}\right)$ in V is ____ (up to two decimal places)
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.