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[*] posted on 6-6-2006 at 01:49
Benzene, toluene distillation speed?

What distills faster under vacuum, benzene or toluene?
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neutrino
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[*] posted on 6-6-2006 at 05:56


I would assume benzene because benzene is a smaller molecule than toluene. Thus it has fewer dispersion forces to break, so the same amount of energy will send more benzene molecules into the gas phase. If energy is being applied at a constant rate, the benzene should boil off faster (comparing moles to moles).

My guess anyway.

P.S. Why a vacuum? These compounds don't have such high boiling points.



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[*] posted on 7-6-2006 at 00:56


I'm using them to extract a temp sensitive compound and want to choose the faster distilling solvent.
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[*] posted on 7-6-2006 at 02:07


Boiling points:-

Toluene - 110.6C
Benzene - 80.1C
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