Answer:
Soaps are the sodium and potassium salts of long chain carboxylic acids whereas detergents are ammonium or sulphohate salts. Cleansing action of soap: One part of soap molecules is ionic and dissolves in water. The other part is non-ionic hydrophobic part which dissolves in oil. Thus soap molecules arrange themselves in the form of a micelle. On rinsing with water soap is washed off, lifting the oily dirt particles with it. Soap does not forms lather in hard water because it forms insoluble preapitate. Problem due to the use of detergent are: (i) Detergent are non-biodegradable. (ii) It leads to water or soil pollution
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