1.

(a) What is the difference between a colloidal solution and an emulsion? Give one example of each. (b) What are emulsifiers?

Answer»

SOLUTION : (a) In a colloidal solution, the dispersed phase is a solid and the dispersion medium is liquid. In an emulsion, both the dispersed phase and the dispersion medium are liquid. Example: Colloidal sol - cell fluids, muddy water.
Emulsion - milk, cold cream
(b) EMULSIFIERS: The substance which are added to stabilise the emulsions are called emulsifiers. Example: Soaps of various KINDS and lyophilic colloids (PROTEINS, gum etc.)


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