A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are

connected by a salt bridge.

Ni²+ (aq) + Mn(s) →→→ Ni(s) + Mn²+(aq)

The anode reaction is:

+

The cathode reaction is:

In the external circuit, electrons migrate

In the salt bridge, anions migrate

compartment.

+

the Ni Ni2+ electrode

the Ni Ni2+ compartment (

Ac

the Mn| Mn²+ electrode..

the Mn|Mn²+