Why get anhydrous ethanol, you can first use the lime water absorption, and then heating distillation? Thanks for the answer
When a large amount of quicklime is added, water can be distilled to produce anhydrous ethanol
Adding lime is that calcium oxide reacts with water to form calcium hydroxide, which consumes water, while lime and calcium hydroxide do not react with ethanol.
The mixture of ethanol and water can not be separated directly by distillation. Although the boiling point is 100 degrees at normal pressure, the ethanol is 78 degrees. Because they will have hydrogen bonds to form azeotrope, azeotrope, water and ethanol will be co distilled, can not play a role in separation.
