Gibbs Helmholtz equation relates the enthalpy, entropy and free energy change of the
Channel: Doubtnut
Date: 19/04/2020

Gibbs Helmholtz equation relates the enthalpy, entropy and free energy change of the process at constant pressure and temperature as    `DeltaG=DeltaH-TDeltaS "        (at constant P, T)"`    In General the magnitude of `DeltaH` does not change much with the change in temperature but the terms `TDeltaS` changes appreciably. Hence in some process spontaneity is very much dependent on temperature and such processes are generally known as entropy driven process.     Fro the reaction at 298 K, `A_(2)B_(4)rarr2AB_(2)`    `DeltaH=2" kJ"` and `DeltaS` = 20 J/K at constant P and T, the reaction will be