Chapter 19, Problem 9PS

The half-cells Fe²⁺(aq) | Fe(s) and O₂(g) | H₂O (in and solution) are linked to create a voltaic cell.

1. (a) Write equations for the oxidation and reduction half-reactions and for the overall (cell) reaction.
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.