Cell Potential

Definition

Cell potential, also known as electromotive force (EMF), is the measure of the potential energy per unit charge available from the oxidation/reduction reactions to drive the reaction. It's measured in volts (V).

Related terms

Redox Reaction:

A type of chemical reaction that involves a transfer of electrons between two species. An oxidation-reduction (redox) reaction is made up of two half reactions - one oxidative and one reductive.

Electrolytic Cell:

A type of electrochemical cell where electrical energy drives a non-spontaneous redox reaction. This is akin to using a pump to push water up a slide against gravity.

Galvanic/Voltaic Cell: A type of electrochemical cell where a spontaneous redox reaction produces electrical energy. This is like letting gravity pull you down the waterslide.