Nernst Equation Calculator

Calculate Cell Potentials Under Non-Standard Conditions

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Basic Nernst Equation Calculator

Calculate cell potential using standard potential and reaction quotient.

Cell Potential: - V

Concentration Cell Calculator

Calculate potential difference in concentration cells.

Potential Difference: - V

pH-Dependent Potential Calculator

Calculate potential for reactions involving H+ ions.

Cell Potential: - V

Equilibrium Constant Calculator

Calculate equilibrium constant from standard potential.

Equilibrium Constant: -

Understanding the Nernst Equation

What is the Nernst Equation?

The Nernst equation relates cell potential to standard potential and concentration. Key concepts include:

  • Standard potential
  • Reaction quotient
  • Temperature effects
  • Electron transfer
  • Concentration dependence

Applications

The Nernst equation is used in:

  • Electrochemical cells
  • pH measurements
  • Battery technology
  • Corrosion studies
  • Biological systems
  • Sensor development

Important Parameters

Key factors include:

  • Temperature
  • Ion concentrations
  • Number of electrons
  • Standard potentials
  • Activity coefficients
  • Solution conditions

Special Cases

Important variations include:

  • Concentration cells
  • pH-dependent reactions
  • Complex formation
  • Mixed potentials
  • Non-ideal solutions

Advanced Concepts

Related topics include:

  • Activity coefficients
  • Membrane potentials
  • Reference electrodes
  • Junction potentials
  • Electrochemical equilibria

Essential Nernst Equation Formulas

Basic Nernst Equation

E = E° - (RT/nF)ln(Q)

Concentration Cell

ΔE = (RT/nF)ln(C2/C1)

Equilibrium Constant

ln(K) = (nFE°)/(RT)