The formula to calculate Gibbs Free Energy is:
\[ G(p,T) = H - TS \]
Where:
Gibbs free energy is a term used in physics, specifically in thermodynamics, that describes the maximum amount of reversible work that can be performed on a system. This system must be at a constant temperature and pressure. In other words, if a closed system goes through a change or process that transforms energy from one state to another, Gibbs’s free energy is the amount of energy that could be converted back to the original state. Another way of thinking about it is to say that it’s equal to the total initial energy minus the work done on the surroundings by the system.
Let's assume the following values:
Using the formula:
\[ G(p,T) = 100 - (300 \times 0.2) = 100 - 60 = 40 \text{ kJ/mol} \]
The Gibbs Free Energy (G) is 40 kJ/mol.
