In electrochemistry, the Nernst equation is an equation which can be used (in conjunction with other information) to determine the equilibrium reduction potential of a half-cell in an electrochemical cell.
I elektrokemi er Nernst-ligningen (eller Nernsts lov) en ligning, der (i samspil med andre oplysninger) kan bruges til at bestemme ligevægtsredoxpotentialet for en halvcelle i en elektrokemisk celle.