Gibbs–Helmholtz equation ( $\partial (G / T) / \partial T = - H / T^{2}$ )

For fixed composition and pressure,

\partial (G / T) / \partial T = - H / T^{2}

. Applying the identity to standard reaction quantities connects equilibrium temperature dependence to reaction enthalpy.

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Past exam of the chemistry course of the year 1 of the natural sciences course of the University of Cambridge / 2022 / Paper 1 / 4 / a / vi / Solution
Past exam of the chemistry course of the year 1 of the natural sciences course of the University of Cambridge / 2023 / Paper 1 / 4 / a / Solution

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Gibbs–Helmholtz equation by

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The Gibbs-Helmholtz equation is a thermodynamic relation that connects the Gibbs free energy (G) and the enthalpy (H) of a system to its temperature (T) and entropy (S). It is often expressed in the context of changes in standard conditions and is particularly useful in determining equilibrium constants and reaction spontaneity.

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