Help with two part equation

Question

a) Write the equation for the half-reaction that occurs at the anode during the electrolysis of molten sodium iodide.

b) Write the equation for the overall reaction that occurs during the electrolysis of aqueous sulfuric acid.

Answer 1

[1] 2I- -->  I2 + 2e

[2] 4H+ + 4e -->  2H2 and 4OH- --> O2 + 2H2O + 4e .  So overall

4H+ + 4OH- --> 2H2 + O2 + 2H2O