Which of the processes A-D will lead to a positive change in the entropy of the system? If all of these processes lead
to a positive change in the entropy of the system, select E.
a.
Sodium chloride crystals form as saltwater evaporates.
b. Helium gas escapes from the hole in a balloon.
C.
d.
e.
Stalactites form in a cave.
Water freezes in a freezer.
All of these lead to a positive change in entropy of the system, as they are all spontaneous.
Which of the following processes will lead to a decrease in the entropy of the system?
a. Salt crystals dissolve in water.
b. Air escapes from a hole in a balloon.
C.
Iron and oxygen react to form rust.
d.
e.
Ice melts in your hand.
None of these lead to a negative change in the entropy of the system, as they are all
spontaneous.
30.58
116.73
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