alleryDistilling an ethanol and water mixture stops at about:
A32 per cent ethanol
B50 per cent ethanol
C95 per cent ethanol
D68 per cent ethanol
Answer & Solution
Correct answer: C. 95 per cent ethanol
1. Fermentation of sugars gives a mixture of ethanol and water.
2. Fractional distillation concentrates the ethanol only so far.
3. At about 95 per cent by volume no further separation occurs.
_Source: syllabus Chemistry Part I, Chapter 2, Solutions._
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