Entropy and Gibbs free energy Flashcards
1
Q
What is entropy and what are its units ?
A
S - Measure of disorder ( J/K/Mol )
2
Q
Out of solid liquids and gases what has the least and most entropy
A
Solid least
liquid middle
Gas Most
3
Q
is it an increase or decrease in entropy if solid has become a gas ?
A
Increase
4
Q
s it a increase or decrease in entropy if molecule has stayed in the same state but now has more moles ?
A
More moles so more disorder so increase in entropy
5
Q
What is the formula for gibbs free energy ?
A
G = deltaH - T S
G - gibbs free energy
H - enthalpy change
T- temperature change in k
S - entropy change
6
Q
What is the relationship between feasibility of a reaction and gibbs free energy ?
A
G< 0 feasible
G>0 not feasible
