what is answer of ques.18 of set 3 paper of science board exam 2019
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What are micelles? Why does it form when soap is added in water? Will micelles be formed in other solvents such as ethonol also? State how formation of micelles help to clean the clothes having oily spots?
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Micelles are liquid molecules that arrange in spherical shape in aqueous solution.
When soap is added to water, micelle is formed. Reason being - Hydrocarbon chains of soap are hydrophobic while the ionic ends are hydrophilic as a result soluble in water.
Will micelles be formed in other solvents such as ethonol also - NO. alkyl chain of soap becomes soluble in alcohol.
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