Question

What is the oxidation half reaction for `Fe(s) + 2HCl(aq) -> FeCl_2(aq) + H_2(g)`?

Answer 1

`Fe - 2e^- → Fe^(2+)`

Explanation:

In this reaction Fe is being oxidized and H is being reduced. To check the balance of a redox reaction, make sure that the number of electrons exchanged are equal in both half-reactions.