basic

Concentration Cell EMF Calculator

Nernst EMF for two same-electrode half-cells with different concentrations.

Compute the EMF of a concentration cell (two identical electrodes in different concentrations of the same ion) at 25 °C using E = (0.0592 / n) · log10([dilute] / [concentrated]).

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

mol/L
mol/L

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

E = (0.0592 / n) · log10([C₁] / [C₂]), with C₁ < C₂.

In depth

Compute the EMF of a concentration cell (two identical electrodes in different concentrations of the same ion) at 25 °C using E = (0.0592 / n) · log10([dilute] / [concentrated]).