Chapter 23 Entropy Flashcards
1
Q
Define entropy (S) and give the standard unit
A
The number of possible arrangements of the particles and their energy in a
given system. J/Kmol
2
Q
ΔS⦵=
A
ΣS⦵(products) – ΣS⦵(reactants)
3
Q
ΔG⦵=
A
ΔH⦵ – TΔS⦵
4
Q
Reaction is feasible when ΔG⦵ is…
A
Negative
5
Q
State the 1st, 2nd and third laws of thermodynamics
A
1st- Law of conservation of energy.
2nd- Entropy of the universe is always increasing.
3rd- All molecular movement stops at absolute zero (0K or -273 C) and a perfect crystal has no entropy.
6
Q
Feasibility depends on…
A
Enthalpy AND Entropy
