Question

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

Answer 1

Gibb's Helmholtz equation:

• Gibbs-Helmholtz equation is used to determine the change in Gibbs energy of a system as a function of temperature.
• Gibb's Helmholtz equation can be expressed as:

${\left(\frac{\mathrm{\delta }\left({\displaystyle \frac{\mathrm{G}}{\mathrm{T}}}\right)}{\mathrm{\delta T}}\right)}_{\mathrm{P}}=\frac{-\mathrm{H}}{{\mathrm{T}}^2}$

• Where $\mathrm{H}$ is the enthalpy, $\mathrm{T}$ is the temperature, and $\mathrm{G}$ represents the Gibbs free energy at constant pressure.

Applications of Gibb's Helmholtz equation:

• This equation is used to find the change in Gibb's energy.
• It is used to describe the scientific study of earthquakes as well as elastic waves.