question 9.19

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Steven_Liu_3H
Posts: 12
Joined: Wed Sep 21, 2016 2:55 pm

question 9.19

Postby Steven_Liu_3H » Sat Jan 28, 2017 12:57 am

What did people get for their final answers?

Yeon Hee Park 3M
Posts: 11
Joined: Mon Sep 26, 2016 3:01 am

Re: question 9.19

Postby Yeon Hee Park 3M » Sat Jan 28, 2017 11:32 am

final answer should be 11J/(K*mol)

steps:
1) prepare calculations by converting all the Celsius degrees to Kelvin
2) raise water to 373K
using heat capacity of LIQUID water and nCln(T2/T1) you should get 3.09JK^-1mol^-1
3) Let it vaporize
using standard entropy of vaporization -109 J/(mol*K)
4) cool it down
remember- you are using molar heat capacities at constant pressure of water VAPOR
-1.39JK^-1mol^-1

add them all up and get the answer


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