Question

What are Immiscible liquids?

Answer 1

Hint :Immiscible liquids are those liquids which do not mix to give a single phase. Consider the example of oil and water. When oil and water are mixed, we can observe two layers i.e. one of them floats on the top of the other.

Complete Step By Step Answer:
Two liquids are usually said to be immiscible if they are completely insoluble in each other. A system containing two immiscible liquids has two phases and is generally called a mixture. But note that these two liquids still have some degree of mutual solubility. If you take the example of water and benzene, a small amount of water will be dissolved in benzene and also a small amount of benzene will be dissolved in water. As the immiscible liquids have no interactions with each other in any way, they will evaporate completely independent of each other. It means each liquid has its own characteristic equilibrium vapor pressure independent of the other liquid. So, the total pressure exerted by the mixture will be equal to the sum of equilibrium vapor pressures.

Note :
Remember that the boiling point of the immiscible mixture must always be lower than that of its components. A mixture of immiscible liquids can be easily separated using a separating funnel. The two liquids are placed in a funnel and are kept aside for some time. Then the liquids settle and form two layers. The tap of the funnel is opened and the liquid at the bottom is collected.