Enter the standard potential, temperature, ion charge, and reaction quotient into the calculator to determine the reduction potential.

Nernst Equation

The following formula is used to calculate the reduction potential of a cell reaction.

E = E0 - (R*T)/(Z*f) * ln (Q)
  • Where E is the reduction potential
  • E0 is the standard potential
  • R is the gas constant
  • T is the temperature in kelvin
  • z is the ion charge
  • F is the Faraday constant
  • Q is the reaction quotient

Nernst Equation Definition

The Nernst Equation is a mathematical expression that relates the electrical potential difference across a membrane (or a cell) to the concentration gradient of ions across that membrane. It is named after the German physicist and chemist Walther Nernst.

The Nernst Equation is important because it allows us to calculate the electrical potential difference across a membrane or cell based on the concentration gradient of ions involved in a chemical reaction. It helps in understanding and predicting the direction and magnitude of ion movement, which is crucial for various biological processes like nerve impulse transmission, muscle contraction, and the functioning of electrochemical cells.

By using this equation, scientists and researchers can determine the conditions required for ions to move across a membrane, as well as study the factors affecting these ion movements. It provides valuable insights into the electrical properties of cells and plays a significant role in fields like biochemistry, physiology, and electrochemistry.


How to calculate reduction potential?

  1. First, determine the standard potential.

    Calculate the standard electrode potential.

  2. Next, determine the temperature.

    Measure the temperature of the reaction in Kelvin.

  3. Next, determine the ion charge.

    Calculate the total ion charge.

  4. Next, determine the reaction quotient.

    Determine the reaction quotient.

  5. Finally, calculate the reduction potential.

    Calculate the reduction potential using the equation above.


What is a cell potential?

A cell potential is a measure of the total electric potential of a electrochemical reaction.

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