1. a spontaneous process has ?H < 0
2. a spontaneous process has ?H > 0 and ?S < 0
3. a system is at equilibrium and ?U > 0 and ?S < 0
Possible answers:
a) ?S of surroundings > 0
b) ?S of surroundings < 0
c) ?S of surroundings = 0
d) ?S of surroundings > ?S
e) ?S of surroundings < ?S
2. a spontaneous process has ?H > 0 and ?S < 0
3. a system is at equilibrium and ?U > 0 and ?S < 0
Possible answers:
a) ?S of surroundings > 0
b) ?S of surroundings < 0
c) ?S of surroundings = 0
d) ?S of surroundings > ?S
e) ?S of surroundings < ?S