What is Gibb’s Helmholtz equation? Explain with the help of applications

The Gibbs Helmholtz equation is a thermodynamic equation that is used to calculate changes in a system’s Gibbs energy as a function of temperature. Hermann von Helmholtz and Josiah Williard Gibbs were the names given to the equation.

The following is the equation:

Where H is the enthalpy, G is the Gibbs free energy, and T is the system’s absolute temperature, and all values are taken at constant pressure P. The change in GT ratio at constant pressure leads in an infinitesimally small change in the factor HT2, according to this equation.

The Gibbs Helmholtz equation has the following applications:

• From a given value of Gibbs free energy at constant pressure, it can be used to calculate the overall enthalpy of a reaction and its variation with temperature.
• It can be used to calculate the Gibbs free energy of a process that takes place at a temperature other than 298 K.
• It can be used to calculate the influence of temperature changes on the equilibrium constant.
• It can be used to assess a reaction’s spontaneity.