Short Answer TypeAnswer:
Micelle formation is done by substance such as soaps and detergent when dissolved in water. The molecules of such substance contain a hydrophobic and hydrophillic part. When present in water these substance arrange themseleves in spherical structure in such a manner that their hydrophobic parts are present towards the centre, while hydrophilic parts are pointing towards outside.
This is known as micelle formation.
A particle of colloidal size formed due to aggregation of several units of soap (surfactant) molecules in a dispersion medium is called micelle. A micelle usually consists of 50 to 100 molecules of the surfactants.
Examples of Miceller system: (i) Sodium stearate + water
[CH3(CH3)16 COO– Na + H2O]
(ii) Sodium dodecyl sulphate + water
[CH3(CH2)11 OSO3– Na+ + H2O]
(iii) Cetylrimethyl ammonium bromide + water
Explain the following terms with an example of each:
(i) Emulsification,
(ii) Chemisorption.
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