Nernst Equation

Estimate electrochemical cell potential away from standard conditions.

How this calculator works

Enter standard potential (v), electrons transferred, reaction quotient, temperature (k). CalcStack applies the displayed formula and reports each intermediate planning value with the units shown.

Formula / method

E = E° − RT ÷ nF × ln(Q)

Worked example

A 1.1 V two-electron cell with Q=10 at 298.15 K has E about 1.0704 V.

Assumptions and limitations

Activities are represented by the entered reaction quotient and temperature is uniform.

Activity coefficients, liquid junction potentials and nonideal electrodes are excluded.