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Surface Chemistry
Micelles
1 question from 1 paper, each with its answer.
- question
- 1
- paper
- 1
- of Surface Chemistry
- 3.33%
Concepts tested
- Structure of a micelle in water
All Questions
2002 AIPMT 1 question
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Position of non polar and polar part in micelleSoap and detergent molecules have a long non-polar (hydrophobic) hydrocarbon tail and a polar (hydrophilic) ionic head.
In water, above the critical micelle concentration, they cluster into spherical micelles. The hydrophobic tails point inward, away from water, forming the core, and the polar heads point outward into the water.
[add image: spherical micelle with ionic heads on the surface and hydrocarbon tails in the core]
Grease and oil dissolve in the non-polar core, which is how soap cleans.
So the polar part is at the outer surface and the non-polar part at the inner surface.