In the electrolysis of dilute sulfuric acid, hydrogen gas is produced at the cathode. What is the ionic half-equation for this reaction?
- A$\text{H}^+ + \text{e}^- \rightarrow \text{H}$
- B$\text{H}^+ \rightarrow \text{H} + \text{e}^-$
- C$2\text{H}^+ + 2\text{e}^- \rightarrow \text{H}_2$
- D$2\text{H}^+ \rightarrow \text{H}_2 + 2\text{e}^-$