Q.
The standard reduction potentials at 298 K for single electrodes are given below.
Electrode electrode potential (volt) $\text{Mg}^{\text{2+}} \text{/Mg}$ $- \text{2} \text{.34}$ $\text{Zn}^{\text{2+}} \text{/Zn}$ $- \text{0} \text{.76}$ $\text{Fe}^{\text{2+}} \text{/Fe}$ $- \text{0} \text{.44}$
From this we can tell that
Electrode | electrode potential (volt) |
$\text{Mg}^{\text{2+}} \text{/Mg}$ | $- \text{2} \text{.34}$ |
$\text{Zn}^{\text{2+}} \text{/Zn}$ | $- \text{0} \text{.76}$ |
$\text{Fe}^{\text{2+}} \text{/Fe}$ | $- \text{0} \text{.44}$ |
NTA AbhyasNTA Abhyas 2022
Solution: