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Topic: Van't Hoff Factor and Boiling Point  (Read 5310 times)

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Offline machine2shotgun

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Van't Hoff Factor and Boiling Point
« on: March 04, 2009, 07:37:25 PM »
Can someone tell me WHY these variables are related? (most important)


I've done an experiment on this, but I don't understand the results.
For a solute in water at 100.2 atm, the concentration is 1m, the van't hoff factor is 3, but then the average boiling point change is 102.4, so I subtract 100 degrees Celsius = 2.4 elevation.
This doesn't make sense as it can't be above 1.5, since temperature change = imK, so (3)(1)(.512) = 1.5 or around that.. so how do I explain it if its 2.4? It only makes sense if its below it because of ion pairing.

Or could it be because that at 100.2 atm, the boiling point is slightly higher? How do I calculate the boiling point of water at 100.2 atm?

Offline ARGOS++

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Re: Van't Hoff Factor and Boiling Point
« Reply #1 on: March 04, 2009, 08:39:30 PM »

Dear machine2shotgun;

There must be several things wrong, because Bp. of water for already 14 atm is reported as 195.53°C; how much will it be for 100 atm?

Good Luck!
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