CSEC Chemistry · January 2017 · Paper 1 · Question Q39

Which of the following ionic equations involves oxidation?

1. (A)\text{S}^{2-} - 2\text{e}^- \rightarrow \text{S}
2. (B)\text{Cl}_2 + 2\text{e}^- \rightarrow 2\text{Cl}^-
3. (C)2\text{H}^+ + 2\text{e}^- \rightarrow \text{H}_2
4. (D)\text{Na}^+ + \text{e}^- \rightarrow \text{Na}