What is van hoft equation?

The Van't Hoff equation is used to relate the change in the equilibrium constant of a chemical reaction with the change in temperature. The equation is named after the Dutch chemist Jacobus Henricus Van't Hoff.

The equation can be written as:

ln(K2/K1) = ΔH/R [(1/T1) - (1/T2)]

where:

• K1 and K2 are the equilibrium constants of the reaction at temperature T1 and T2, respectively
• ΔH is the enthalpy change of the reaction
• R is the gas constant (8.314 J/(mol*K))
• T1 and T2 are the temperatures at which the equilibrium constants are measured

The Van't Hoff equation is used to calculate the activation energy and other thermodynamic properties of a reaction. It can also be used to predict the effect of temperature on the equilibrium constant and the direction of the reaction. The equation assumes that the reaction is in thermodynamic equilibrium and that ΔH and R are constant over the temperature range considered.