Entropy and Gibbs free energy: The Second Law of Thermodynamics states that the entropy of a closed system always increases over time in a system at a constant...
Entropy and Gibbs free energy:
The Second Law of Thermodynamics states that the entropy of a closed system always increases over time in a system at a constant temperature. Entropy refers to the degree of disorder or randomness within a system. As the temperature increases, the entropy also increases. This means that the system becomes more disordered and random.
The Gibbs free energy is a measure of the maximum amount of work that a system can perform at a constant temperature. The Gibbs free energy is a function of the state of a system, which includes the temperature, pressure, and composition of the system.
The Gibbs free energy is given by the following equation:
where:
G is the Gibbs free energy in a system in J
H is the internal energy of the system in J
T is the temperature in Kelvin
S is the entropy of the system in J/K
The Gibbs free energy is a measure of the maximum work that a system can perform at a constant temperature. The Gibbs free energy is also a useful tool for predicting the spontaneity of a reaction. A reaction is spontaneous if the Gibbs free energy is negative, meaning that the Gibbs free energy is lower when the reaction occurs in the forward direction