Question
On the basis of standard electrode potential values, suggest which of the following reactions would take place? (Consult the book for $\text{E}^\ominus$ value).
- $\text{Cu + Zn}^{2+}\xrightarrow{ \ \ \ \ \ \ \ }\text{Cu}^{2+}+\text{Zn}$
- $\text{Mg + Fe}^{2+}\xrightarrow{ \ \ \ \ \ \ \ \ }\text{Mg}^{2+}+\text{Fe}$
- $\text{Br}_2+\text{2Cl}^-\xrightarrow{ \ \ \ \ \ \ \ \ }\text{Cl}_2+2\text{Br}^-$
- $\text{Fe + Cd}^{2+}\xrightarrow{ \ \ \ \ \ \ \ \ }\text{Cd + Fe}^{2+}$