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Both soap and detergent are some type of...

Both soap and detergent are some type of salts. What is the difference between them?
Describe in brief the cleansing action of soap. Why do soaps not form lather in head water?
List two problems that arise due to the use of detergents instead of soaps .

Text Solution

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Soaps are sodium or potassium slats of long-chain carboxylic acids. Detergents are generally ammonium or sulphonate salts of long chaincarboxylic acids.
Soaps do not form lather in hard water because hard water contains calcium and magnesium salts. Soap molecules react with calcium and magnesium salts to form an isoluble precipitate called scum.
Two problems which arise because of the use of detergents are:
(i) Detergents are non-biodegradable, hence, detergents accumulate in the environment and cause problems.
(ii) Certain phosphate additives are added to detergents which form a thick green scum over the river water and harm the animal life in the river.
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Knowledge Check

  • The cleaning action of soap and detergent in water is due to the formation of

    A
    micelle
    B
    salt
    C
    base
    D
    acid

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