1. A mixture of 95% ethanol and 5% water has a lower boiling point than either p
ID: 228589 • Letter: 1
Question
1. A mixture of 95% ethanol and 5% water has a lower boiling point than either pure water or pure ethanol. Why is it impossible to obtain pure (absolute) ethanol by distillation of an ethanol/water mixture even with very good column?, (Hint:which is more volitile, 95% ethanol or pure ethanol?) 2. why is wine never mo re than about 12% alcohol? 3. Vodka is produced from the fermentation of potato starch. It is about 90% alcohol. How is the high concentration of alcohol achieved? 4. Ethanol is metabolized and eliminated from the body in a matter of a couple hours. Why does one still feel the effects of drinking as much as eight to twelve hours later, for instance, the morning after?Explanation / Answer
it is not possible to obtain 100% pure ethanol because aa distillation is performed from one plate to another the solution become reacher in ethanol but a time come when vapour composition and solution compostion do not change .the solution become azeotropic mixture.
the azeotropic mixture contain same mole fraction of ethanol and water as in solution
pure ethanol is more volatile
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