Which of the following statements is correct in the context of micelles?

Options

A. Micelles are ture solutions
B. Micelles are formed below critical micelle concentration.
C. Micelles are formed above critical micelle concentration.
D. Micelles are not associated colloids

Answer

C

Explanation

Associated colloids form micelles above a particular concentration called critical micelle concentration `(CMC)` . On dilution, these colloids revert back to individual ions. Surface active agenets such as soaps and synthetic detergents belong to this class. For soaps, the `CMC` is `~10^(-4)` to `10^(-3)molL^(-1)` . Micelles may constain as `100` molecules or more.
Macromolcular colloids, which are quite stable, resemble true solutions in many respects.