2006-06-29 16:01:48 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
It is not possible to obtain absolute alcohol by simple fractional distillation, because a mixture containing around 95.5% alcohol and 4.5% water becomes an azeotropic mixture. In one common industrial method to obtain 100% pure alcohol, a small quantity of benzene is added to rectified spirit and the mixture is then distilled. Because a small amount of the benzene used remains , the solution is carcinogenic. So production of absolute alcohol is done by desiccation using glycerol. Alcohol produced by this method is known as spectroscopic alcohol.
2006-06-29 18:49:51 · answer #1 · answered by 99 ks 2 · 0⤊ 0⤋
I don't know exactly what kind of fractional distillation you are talking about. What I do know is that glycerol has an extremely high boiling point for it's molecular weight. This has to do with the intermolecular hydrogen bonding that occurs with glycerol.
2006-06-29 23:06:26 · answer #2 · answered by J Mon 1 · 0⤊ 0⤋
To avoid studying/doing your homework. Back to it missy!
2006-06-29 23:04:45 · answer #3 · answered by HomeSweetSiliconValley 4 · 0⤊ 0⤋