Chapter 23 Entropy

Question 1

Define entropy (S) and give the standard unit

Answer 1

The number of possible arrangements of the particles and their energy in a
given system. J/Kmol

Question 2

ΔS⦵=

Answer 2

ΣS⦵(products) – ΣS⦵(reactants)

Question 3

ΔG⦵=

Answer 3

ΔH⦵ – TΔS⦵

Question 4

Reaction is feasible when ΔG⦵ is…

Answer 4

Negative

Question 5

State the 1st, 2nd and third laws of thermodynamics

Answer 5

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.

Question 6

Feasibility depends on…

Answer 6

Enthalpy AND Entropy