Question

Two immiscible liquids are taken in the above funnel for separation.
Which is denser, X or Y? Suggest any one example for X and one for Y. A third liquid Z which is soluble only in Y is added to the mixture, and the contents in the funnel are shaken well. How many layers will you observe now? How will you separate the three liquids? The boiling point of X is 98°C, that of Y is 43°C and that of Z is 75°C.

Answer 1

The boiling points of the 3 liquids are given as
X is 98°C – Which corresponds to water.
Y is 43°C – Which corresponds to oil.
Z is 75°C – Which corresponds to alcohol.
‘Y’ is denser.
Only two layers are observed. X is separated by a separating funnel, and Z is separated by distillation method. Y – is in the distillation flask.