Gibb-Free-Energy Lesson
Gibb-Free-Energy Lesson
Gibb-Free-Energy Lesson
G=U+PV−TS
G (symbol)
H (enthalphy)
T (temperature)
S (Entropy)
The change in free energy (ΔG) of a system for a constant-
temperature process is
ΔG = ΔH - TΔS
direction.
ΔG=? ΔG = ΔH - TΔS
ΔG= 39,896 cal - (310K) (120 cal/K)
Formula: ΔG= 39,896 cal - 37,200 cal
ΔG = ΔH - TΔS
H2(g)+I2(g)↽−−⇀2HI(g)H2(g)+I2(g)↽−−⇀2HI(g)