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For 5C on the pizza rolls, it is false that one cannot calculate the entropy of vaporization for water at room temp because water has a boiling point of 373K. How would you calculate entropy of vaporization without raising the temperature? I dont understand how it is false.
I believe their explanation was that room temperature= 298K and water vaporizes at 298K therefore you can calculate entropy. I think its similar to the problems we have had where you have to divide entropy up in to steps (since it is a state function) and you can navigate your way to the DeltaSvap of water for that temp. knowing that it has a boiling pt. of 373K. Look at problem 12B- it's sort of an example of the steps you'd take to calculate the DeltaSvap of this.
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