Joule per mole

The joule per mole (symbol: J·mol^-1) is an SI derived unit of energy per amount of material. Energy is measured in joules, and the amount of material is measured in moles.

Additional recommended knowledge

What is the Sensitivity of my Balance?

Essential Laboratory Skills Guide

Better weighing performance in 6 easy steps

Physical quantities measured in J·mol^-1 include:

• Heat of vaporization
• Heat of fusion
• Ionization energy
• Heat Capacity
• etc...

For convenience and due to the range of magnitudes involved, these quantities are nearly always quoted in kJ/mol. For example, heats of fusion and vaporization are usually of the order of 10 kJ/mol, bond energies are of the order of 100 kJ/mol, and ionization energies of the order of 1000 kJ/mol.

One can convert to electronvolts using the fact that

1 eV = 1 J/C = F J/mol of electrons = (96485.38 ± 0.02) J/mol of electrons

where F is Faraday's constant.