CHEMISTRY CALCULATORS
Electromotive Force (EMF) Calculator
Calculate the electromotive force of a cell or battery for chemistry enthusiasts.
What is the Electromotive Force (EMF) Calculator & How does it work?
Electromotive Force (EMF) is a measure of the energy that can be released by an electrochemical cell per unit charge. It is typically measured in volts (V). The EMF of a cell can be calculated using various methods depending on the type of cell and the reactions involved.
For a simple voltaic cell, the Nernst equation relates the cell potential to the standard cell potential and the concentrations of the reactants and products. The formula is:
For a simple voltaic cell, the Nernst equation relates the cell potential to the standard cell potential and the concentrations of the reactants and products. The formula is:
E_{cell} = E_{cell}^{\circ} – \frac{RT}{nF} \ln Q
Ecell = Cell potential
Ecell° = Standard cell potential
R = Gas constant (8.314 J/(mol·K))
T = Temperature in Kelvin
n = Number of moles of electrons transferred
F = Faraday’s constant (96485 C/mol)
Q = Reaction quotient
Ecell° = Standard cell potential
R = Gas constant (8.314 J/(mol·K))
T = Temperature in Kelvin
n = Number of moles of electrons transferred
F = Faraday’s constant (96485 C/mol)
Q = Reaction quotient
Parameters
Result—
Results are for informational purposes only and do not constitute professional advice.