Question

what is the change in Gibbs free energy at equilibrium?

Answer 1

Hint : To answer this question, we first need to understand what is equilibrium in chemistry. Chemical equilibrium is a state in which no net change in the amounts of reactants and products occurs during a reversible chemical reaction. A reversible chemical reaction occurs when the products react with the original reactants as soon as they are generated. At equilibrium, the two opposing reactions occur at the same rate, or velocities, and so no net change in the quantity of substances involved occurs.

Complete Step By Step Answer:
Gibbs free energy: Gibbs free energy, also known as Gibbs function, Gibbs energy, or free enthalpy, is a term used to measure the greatest amount of work done in a thermodynamic system when temperature and pressure remain constant. The letter ‘G' stands for Gibbs free energy. Its energy is often measured in Joules or Kilojoules. The maximum amount of work that may be extracted from a closed system is defined as Gibbs free energy.
A system is in dynamical equilibrium when it is at equilibrium. Forward and backward reactions take place at the same time. If the forward reaction's Gibbs energy change is $G$ , the backward reaction's Gibbs energy change is $- G$ . $G + \left( { - G} \right){\text{ }} = 0$ is the total Gibbs energy at equilibrium. This is why, in equilibrium, Gibbs energy is zero.
So, the final answer is that at equilibrium change is Gibbs free energy is 0.

Note :
Gibbs is a character in the novel Gibbs Energy that is completely free. As they progress, spontaneous reactions produce free energy. Remember that the enthalpy and entropy changes that occur in the system determine the spontaneity of a reaction. A reaction's free energy change is a mathematical mixture of the enthalpy and entropy changes.