Question

What is the maximum amount of work that can be obtained from a chemical reaction at constant temperature and pressure, given the Gibbs free energy change of the reaction is -20 kJ/mol?

Answer 1

The maximum amount of work that can be obtained from a chemical reaction at constant temperature and pressure is equal to the negative of the Gibbs free energy change of the reaction. In this case, the Gibbs free energy change is -20 kJ/mol.Maximum work = -G = - -20 kJ/mol  = 20 kJ/molSo, the maximum amount of work that can be obtained from this reaction is 20 kJ/mol.