We’re being asked to determine the process that produces a decrease in the entropy of the system
Recall that if:
• ΔS > 0 or ΔS = (+); entropy is increased
• ΔS < 0 or ΔS = (–); entropy is decreased
Remember that phase changes lead to a change in entropy:
Also, recall that an increase in the number of gas molecules in the reaction also leads to an increase in entropy.
Which one of the following processes produces a decrease in the entropy of the system?
A) boiling water to form steam
B) melting ice to form water
C) mixing of two gases into one container
D) freezing water to form ice
E) dissolution of solid KCl in water
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What scientific concept do you need to know in order to solve this problem?
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