Salt bridge

The salt bridge is an important component of an electrochemical cell:

• It provides the electrical connection between the two reaction vessels while keeping the two reactions separate.
• It allows the electron transfer between the two vessels.

To connect (or 'bridge') two reaction vessels, each end of the salt bridge must be immersed in the respective solution. The vessels must both be in place before the salt bridge can be added.

See also:

• Electrodes
• Using chemistry parts