5.2.2 - Entropy Notes Amd Def Flashcards
1
Q
What is the natural tendency for energy
A
To be spread
2
Q
If the entropy is greater, what does that mean?
A
More disorder and greater disposal of energy
3
Q
units of entropy?
A
J K ^-1 mol^-1
4
Q
Entropy of the states
A
Solid - smallest
Liquid - middle
Gas - highest
5
Q
Entropy from an eq
A
Check both reactant and product sides. Check which side has more/less moles of gas
e.g
N2 + 3H2 —> 2NH3
4 moles vs 2 moles so S is negative
6
Q
Entropy equation
A
Products - Reactants
7
Q
What is the free energy eq and when is it feasible?
A
G = H - TS
Feasible when G<0
8
Q
Limitations
A
- Takes no account of kinetics
- Takes no account of rate of reaction
