Answer:
Acetone is soluble in water, a homogeneous mixture is
obtained and hence separation by separating funnel cannot be used. Acetone can
be get back by simple distillation because the difference in the boiling points
of acetone and water is more than 25oC.
Boiling point of acetone ? 56°C
Boiling point of water ? 100°C
In distillation flask, acetone will boil at 56°C and
change into vapours and can be collected in flask after condensation.
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