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Solved: Explain why each of the following processes is an
Chapter 20, Problem 17DQ(choose chapter or problem)
Explain why each of the following processes is an example of increasing disorder or randomness: mixing hot and cold water; free expansion of a gas; irreversible heat flow; developing heat by mechanical friction. Are entropy increases involved in all of these? Why or why not?
Questions & Answers
QUESTION:
Explain why each of the following processes is an example of increasing disorder or randomness: mixing hot and cold water; free expansion of a gas; irreversible heat flow; developing heat by mechanical friction. Are entropy increases involved in all of these? Why or why not?
ANSWER:Solution 17 DQ
Step 1:
The examples given here all the increase the entropy as they cause disorder or randomness
Consider
Case 1:
Mixing hot water and cold water
When we mix water which are different temperatures, there is exchange of heat, heat flows from hot water to cold water
Hence the change in entropy will be