Nernst Equation

Nernst Equation

Nernst Equation is an equation used to calculate the electrical potential of a chemical reaction. In its equilibrium state, the Nernst equation should be zero. It also shows the direct relation between energy or potential of a cell and its participating ions. The equation is proposed by a German chemist, Walther H. Nernst (1864-1941).

Equation

Nernst equation can be expressed as follows:

where

E_cell is the half-cell potential difference

E^θ_cell is the standard half-cell potential

R is the universal gas constant; R = 8.314471 J K^-1 Mol^-1