A voltaic cell is constructed in which the anode is a Cr²+ | Cr³+ half cell and the cathode is a Fe²+ | Fe³+

half cell. The half-cell compartments are connected by a salt bridge.

(Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed,

leave it blank.)

The anode reaction is:

+

The cathode reaction is:

+

The net cell reaction is:

+

In the external circuit, electrons migrate |

electrode.

In the salt bridge, anions migrate

compartment.

+

the Fe²+ | Fe³+ electrode (

the Cr²+ | Cr³+ compartment (

the Cr²+ | Cr³+

*|Fe3+

the Fe²+