Separating funnel is used to separate two immiscible liquids and not the miscible liquids. Why is it so?

Two immiscible liquids are separated by the difference in their densities. When left undisturbed, the denser liquid tends to stay at the bottom of the separating funnel, and the lighter liquid stays at the top. Then the denser liquid is extracted out by carefully operating the stopcock.


In the case of miscible liquids, the densities of the constituent liquids are relatively the same and the mixture is homogenous. When left undisturbed, one will not obtain the liquids in layer as there is not much difference in their densities.


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