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Zoology
Essay specific features
Written by:
Edward W
Date added:
February 23, 2017
Level:
University
Grade:
A
No of pages / words:
3 / 635
Was viewed:
2188 times
Rating of current essay:
Essay content:
When lime is mixed with the water in ethanol, calcium hydroxide forms. The calcium hydroxide can then be separated from the ethanol. Similarly, a hygroscopic material will dissolve some of the water content of the ethanol as it passes through, leaving a purer alcohol.[1]
[edit] Addition of an entrainer
The ethanol-water azeotrope can be broken by the addition of a small quantity of benzene or cyclohexane...
displayed 300 characters
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Benzene, ethanol, and water form a ternary azeotrope with a boiling point of 64.9 °C. Since this azeotrope is more volatile than the ethanol-water azeotrope, it can be fractionally distilled out of the ethanol-water mixture, extracting essentially all of the water in the process. The bottoms from such a distillation is anhydrous ethanol, with several parts per million residual benzene...
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