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Soaps are sodium or potassium salts of higher fatty acids. Fatty acids are carboxylic acids containing 12 or more carbon atoms. Detergents are sodium or potassium salts of sulphonic acids. They have SO3Na group and can even work with hard water. Soap forms an insoluble substance called residue with hard water. This is due to its reaction with the calcium and magnesium salts which cause the hardness of water. Thus, a larger amount of soap needs to be used. (i) What is saponification ? (ii) Which group is present in soaps ? (iii) What is micelle ? (iv) How does micelles dissolve dirt and greese ? (v) Which type of detergents are non-biodegradable ? |
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Answer» and NA GROUP is present in soapii) Michelle is an AGGREGATE of molecules in a COLLODIAL solution , such as those are formed by detergents |
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