Holtz had given two equation and are known as Gibbs

Last updated: 7/2/2023

Holtz had given two equation and are known as Gibbs Helmholtz equation One equation can be expressed in terms of change in free energy AG and enthalpy AH while other can be expressed in terms of change in internal energy AE and work function AW AG AH T d AG dT da000 1 AW AW AE T d 2 dt V Where T is temperature equation 1 is obtained at constant pressure while equation B is obtained at constant volume system It is observed that for the reaction N g 3H g 2NH g Free energy change at 25 C is 33 kJ while at 35 C is 28 kJ which are at a constant pressure 5 What would be the difference between enthalpy change at 25 C and 35 C for a given reaction B 5 kJ C 3 kJ D zero A 4 kJ 6 What would be the free energy change at 30 C A 30 5 kJ B 33 kJ C 28 kJ D 30 5 kJ Internal energy change at 25 C is E while at 35 C is E then 7 A E E B E EFE D