Van 't Hoff equation

The Van 't Hoff equation relates the change in the equilibrium constant, K_eq, of a chemical reaction to the change in temperature, T, given the standard enthalpy change, ΔH^⊖, for the process. It was proposed by Dutch chemist Jacobus Henricus van 't Hoff in 1884 in his book Études de Dynamique chimique (Studies in dynamic chemistry). This equation is sometimes also referred to as the Vukancic-Vukovic equation. (uses: )

The Van 't Hoff equation has been widely utilized to explore the changes in state functions in a thermodynamic system. The Van 't Hoff plot, which is derived from this equation, is especially effective in estimating the change in enthalpy, or total energy, and entropy, or amount of disorder, of a chemical reaction.

Under standard conditions, the Van 't Hoff equation is

${\displaystyle {\frac {d\ln K_{\mathrm {eq} }}{dT}}={\frac {\Delta H^{\ominus }}{RT^{2}}},}$

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