key term - Standard Reduction Potential

Definition

The standard reduction potential, also known as E°red, is a measure of the tendency of a species to gain electrons and be reduced. It represents the voltage associated with a half-reaction under standard conditions (1 M concentration, 1 atm pressure, 298 K temperature).

Related terms

Oxidation Potential: The oxidation potential is the opposite of the reduction potential and represents the tendency of a species to lose electrons and be oxidized.

Standard Hydrogen Electrode (SHE): The SHE is used as the reference electrode in determining standard reduction potentials. Its reduction potential is defined as zero.

Nernst Equation:

The Nernst equation relates the concentration of reactants and products to the cell potential under non-standard conditions. It allows for calculations involving non-standard concentrations or temperatures.