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Immiscible liquids: Topic for CSIR-UGC-NET, GATE and IIT-JAM Exams

Immiscible Liquids: Immiscible liquids are liquids that do not mix to give a homogenous solution. Liquid immiscibility is a state in which two liquids with different compositions coexist in equilibrium with each other. Immiscible liquids do not mix and form an emulsion of droplets or networks of one liquid within the other (e.g. oil and water). Liquids can become immiscible on lowering the temperature and remain unmixed into two liquids. Immiscibility occurs when the Gibbs free energy of the two liquids is lesser than the gibbs free energy of a mixed liquids.  In chemistry, when two liquids mix together, they can be classified as miscible or immiscible. In miscible liquids, the bonds that are holding each separate liquid together must be broken and new bonds must be formed. When this occurs, the two liquids mix together in equal proportions and mix completely. Immiscible liquids are the opposite. Their bonds are not broken in order to form new bonds, and the two liquids