Problem on free energy entropy

Question

Assignment:

Question 1. Which sample of sulfur at 25°C has the greatest entropy?
A) S2(g)
B) cannot be predicted
C) S8(g)
D) S(g)

Question 2. What is the standard free energy change for the following reaction at 25°C: C(diamond) → C(graphite) (?)
A) -2.90 kJ
B) +2.90 kJ
C) 0 kJ
D) -5.80 kJ

Question 3. Which sample of H2O has the least entropy?
A) steam
B) liquid water
C) ice
D) cannot be predicted

Question 4. Which substance at 25°C is more stable, diamond or graphite?
A) diamond
B) graphite
C) they have the same stability
D) cannot be predicted

Question 5. Predict which of the following reactions has a positive entropy change.
(1) 2 N₂(g) + O₂(g) → 2 N₂O(g)
(2) CaCO₃(s) →CaO(s) + CO₂(g)
(3) Zn(s) + 2 HCl(aq) → ZnCl₂(aq) + H₂(g)