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Anonymous Wed Mar 23 12:59:59 2011 No.2759400 [Reply] [Original]

Hey /sci. I humbly ask for your help.
I'm doing a paper in physical chemistry and something is really bothering me, and I can't get the result right.

Here it goes.

Ethylene glycol is destilled at 50 Torr (Vacuum destillation). The boiling of ethylene glycol is 470.5 Kelvin, and its vapor pressure at 415 Kelvin is 100 Torr.

Calculate the enthalpy of vaporization, H(vap).

I think I'm supposed to use the Clausius–Clapeyron relation, but I can't get the result right - Which is 59.3 kJ/mole.

Hope someone can help. Thanks.

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