Chapter 19, Problem 7PS

A voltaic cell is constructed using the reaction of chromium metal and iron(II) ions.

2 Cr(s) + 3 Fe²⁺(aq) → 2 Cr³⁺(aq) + 3 Fe(s)

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 ________.