Question

cleaning action of soap

Answer 1

soap and detergent consist of hydrogen chain as tail and a negatively charged head .The tail is hydrophobic in nature where as heads hydrophilic in nature
in the aqueous soling water being polar in nature surround the ions and not the hydrophobic part of soapor detergent.
in cleansing clothes the carbons or hydrophobic part attach itself oil and dirt thus a cluster of micells are formed when water is agitated oil and dirt tends to lift up from the clothes and hence clothes are cleaned

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Answer 2

hey mate here is ur ans .....

A molecule of soap is made up of the following parts :-

• A polar part consisting of COO-Na+ . This is called polar part .
• A non polar part consisting of long chain of 12 to 18 carbon atoms . This is called hydrocarbon end .

The polar end of soap is water-soluble , whereas the hydrocarbon part is water - repellent and oil - soluble .

when an oily (dirty ) piece of cloth is put into soap solution , the hydrocarbon part of the soap molecule attaches itself to oily drop , and the polar end orients itself towards water . The Na+ ions in solution arranges themselves around the -COO ions . The negatively charged micelle so formed entraps the oily dirt .
The negatively charged micelles repel each other due to elctrostatic repulsion As a result ,the tiny oily dirt particles do not come together and get washed away in during rinsing .


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