For a process that occurs at constant temperature, does the change in Gibbs free energy depend on changes in the enthalpy and entropy of the system?

Gibbs's free energy helps to combine enthalpy and entropy into a single value. The change in the Gibbs free energy of the system occurs when It equals the enthalpy (∆H) minus the entropy (∆S) of the system, and product of the temperature.

(G = H — TS)

Gibbs free energy is known as the energy which is associated with a chemical reaction that can do useful work. At a constant temperature it is describe as:

∆G = ∆H — T∆S.

∆G finds the direction of the chemical reaction. If ∆G is negative, the reaction called a spontaneous reaction. If ∆G is positive, the reaction is called a non-spontaneous reaction. If ∆G is 0 the system is at equilibrium state.

adioabiola adioabiola · Answer 2 · 2021-11-23T18:07:25+01:00

For a reaction that occurs at constant temperature: Yes, the Gibbs free energy depends on changes in the enthalpy and entropy of the system.

At constant temperature: The Gibb's free energy is given mathematically as;

∆G = ∆H — T∆S.

According to the equation relating the Gibb's free energy to the enthalpy and entropy of the system.

It is evident that an increase in the enthalpy or decrease in the entropy leads to an increase in the Gibb's free energy.

While, a decrease in the enthalpy or increase in the entropy leads to an decrease in the Gibb's free energy.