R1.4 Entropy and spontaneity
0.0(0)
Studied by 0 people
Learn
Practice Test
Spaced Repetition
Match
FlashcardsCard Sorting
1/7
There's no tags or description
Looks like no tags are added yet.
Study Analytics
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
8 Terms
1
New cards
Entropy (S)
A measure of the distribution of available energy among particles, showing how disordered the system is. Higher entropy means the system is more stable
2
New cards
Increase in entropy means…
more disorder, for example solid to gas
3
New cards
ΔS=
Sproducts - Sreactants
4
New cards
Gibbs equation
ΔG = ΔH – TΔS
ΔG in kJ/mol, ΔH in kJ/mol, T in K, ΔS in kJ/K/mol
5
New cards
A reaction is spontaneous when…
Gibbs free energy has a negative value
6
New cards
A reaction is not spontaneous when…
Gibbs free energy has a positive value
7
New cards
If the value of K is greater than 1…
The products are favoured, the equilibrium lies to the right
8
New cards
If the value of K is less than 1…
The reactants are favoured, the equilibrium lies to the left
Note 
Flashcards (20)