Question 1
Which response includes
all the following processes that are accompanied by an
increase in entropy?
1) 2SO
2(g) + O
2(g) → SO
3(g)
2) H
2O(l) → H
2O(s)
3) Br
2(l) → Br
2(g)
4) H
2O
2(l) → H
2O(l) +
1/
2O
2(g)
◦ 1, 2, 3, 4
◦ 1, 2
◦ 2, 3, 4
◦ 3, 4
◦ 1, 4
Question 2
With respect to the system only, a reaction with ΔH > 0 and ΔS < 0 is predicted to be:
◦ Spontaneous at all temperatures
◦ Spontaneous at high temperatures only
◦ Spontaneous at low temperatures only
◦ Nonspontaneous at all temperatures