Chapter 19, Problem 8PS

A voltaic cell is constructed using the reaction

Mg(s) + 2H⁺(aq) → Mg²⁺(aq) + H₂(g)

1. (a) Write equations for the oxidation and reduction half-reactions.
2. (b) Which half-reaction occurs in the anode compartment, and which occurs in the cathode compartment?
3. (c) Complete the following sentences: Electrons in the external circuit flow from the ________ electrode to the ______ electrode. Negative ions move in the salt bridge from the ______ half-cell to the ______ half-cell. The half-reaction at the anode is ____, and that at the cathode is _____.