Question

derive the expression ∆G = H - T∆S​

Answer 1

Answer;

energy=useful work+ non useful work

H=G+TS

G=H-TS

We can't calculate absolute value so formula become_ ∆G=∆H-∆TS

∆G=∆H-T∆S-S∆T

WHERE S∆T BECOME ZERO at constant temp & pressure therefore;

∆G=∆H-T∆S .

hence proved.

THANK YOU.