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calculating normal boiling point
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Topic: calculating normal boiling point (Read 27017 times)
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teddypunkkari
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calculating normal boiling point
«
on:
October 05, 2005, 10:58:10 AM »
How can I calculate normal boiling point using Clausius-Clauperon equation? For example: for naphthalene vapour pressure of the liquid is 10 Torr at 85.8 C and 40 Torr at 119.3 C. How can I get the normal boiling point with this data?
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themark
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Re:calculating normal boiling point
«
Reply #1 on:
October 06, 2005, 10:49:58 AM »
Hello,
Here are two hints:
1) Ln (P1/P2) =( delta Hvaporization/R)*(1/T2-1/T1): Look at the data given in the problem. this equation has one unkwon
and its a constant for that compound.
2) a liquid boils when its vapor pressure equals atmospheric pressure.
I hope this helps
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calculating normal boiling point