Answer:
Free energy is the energy that is available to do work in a system.
Step-by-step explanation:
In biochemistry, free energy is often used to describe the energy changes that occur during chemical reactions.
During exergonic reactions, the free energy of the products is lower than the free energy of the reactants. This means that energy is released during the reaction, and the reaction is spontaneous. In contrast, during endergonic reactions, the free energy of the products is higher than the free energy of the reactants. This means that energy is required for the reaction to occur, and the reaction is not spontaneous.
The free energy difference between the substrates and products of exergonic reactions is negative, which means that the reaction releases free energy. The free energy difference between the substrates and products of endergonic reactions is positive, which means that the reaction requires free energy to occur.