please explain the mechanism of micelle formation with suitable examples.

Micelle: When soap is added to water, then the fatty acid ions aggregate to form spherical clustures which are called as micelles. They are forme during cleasing action of soap or detergent when they areused with water.

Mechanism Of Micelle formation: Micelles are prepared during the cleasing action of soaps and also known as associated colloids. These micelle behaves as electrolyte at low concentration and as colloid at higher concentrations

• Actually the Soap is a sodium salt of a long chain fatty acid in which the fatty acid ion is made of polar head soluble in water and and a long zig zag non polar hydrocarbon chain. In the aqueos solution soap ionizes as RCOO^- and Na⁺ ions.

• The micelle are formed only above a partcular temperature called Kraft Temperature T k and above a particular concentration known as Critical micelle concentration (CMC) which is found to be 10^-3 mol/L for soaps.
• when soap is adde to water, the fattty acid ionizes to give RCOO ^- and Na⁺ ions. In the critical concentration, the polar water soluble get attracted towards water while the non polar tails attract each other.
• Hence, the ions aggregate to form spherical clustures which are called micelle. The core of a micelle is made up of non polar tails dissolved together and the water soluble polar heads ponts outward.
• since the similar micelle repel each other so they remain suspended in water.

Process of removal of dirt: When a dirty cloth is washed with soap and water, the non-polar grease film on the fabric dissolves in the non-polar core of micelle And so when washed with water both the dirt and micelles are washed away.