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Cleansing action of detergent??

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Cleansing action of detergent??

Posted by Prtam Anand Anand 6 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 6 years, 8 months ago

Since a detergent is a made up of two parts: a long hydrocarbon part and a short ionic part containing –COONa⁺ group.
The long hydrocarbon chain is hydrophobic, so the hydrocarbon part of detergent molecule is insoluble in water but soluble in oil and grease. The ionic part of detergent molecule is hydrophilic so it is soluble in water but insoluble in oil and grease.
When the detergent added to dirty clothes, which contains grease and oily substances, the greasy and oily dirt particles attach themselves to the hydrocarbon part and ionic part remains attached to the water. When the dirty clothes are agitated in a detergent solution, the dirt particles attached to the hydrocarbon part molecule get washed away in water and the clothes get cleaned.

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