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प्रश्न
How are synthetic detergents better than soap?
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उत्तर १
Soaps work in soft water. However, they are not effective in hard water. In contrast, synthetic detergents work both in soft water and hard water.
Therefore, synthetic detergents are better than soaps.
उत्तर २
They can be used in hard water as well as in acidic solution. The reason being that sulphonic acids and their calcium and magnesium salts are soluble in water thus they do not form curdy white precipitate with hard water but the fatty acids and their calcium and magnesium salts of soaps are insoluble. Detergents also works in slightly acidic solution due to formation of soluble alkyl hydrogen sulphates. Soaps react with acidic solution to form insoluble fatty acids.
संबंधित प्रश्न
Explain the following term with a suitable example:
Cationic detergents
Label the hydrophilic and hydrophobic parts in the following compounds.
Label the hydrophilic and hydrophobic parts in the following compounds.
`CH_3(CH_2)_16COO(CH_2CH_2O)_nCH_2CH_2OH`
Define disinfectants with a Suitable example?
What type of detergents are used in toothpaste?
What type of detergent are used in toothpastes?
Define the following term with a suitable example in each:
Cationic detergents
Which of the following is an example of liquid dishwashing detergent?
Which of the following are anionic detergents?
(i) Sodium salts of sulphonated long-chain alcohol.
(ii) Ester of stearic acid and polyethylene glycol.
(iii) Quarternary ammonium salt of amine with acetate ion.
(iv) Sodium salts of sulphonated long-chain hydrocarbons.
Which of the following statements are correct?
(i) Cationic detergents have germicidal properties.
(ii) Bacteria can degrade the detergents containing highly branched chains.
(iii) Some synthetic detergents can give foam even in ice cold water.
(iv) Synthetic detergents are not soaps.
Dishwashing soaps are synthetic detergents. What is their chemical nature?
Match structures given in Column I with the type of detergents given in Column II.
| Column I | Column II |
| (i) \[\ce{CH3(CH2)16COO(CH2CH2O) nCH2CH2OH}\] | (a) Cationic detergent |
| (ii) \[\ce{C17H35COO- Na+}\] | (b) Anionic detergent |
| (iii) \[\ce{CH3-(CH2)10CH2SO3- Na+}\] | (c) Nonionic detergent |
|
(iv) |
(d) Soap |
Explain the following term with suitable examples.
cationic detergents
Explain the following term with suitable examples.
cationic detergents
Explain the following term with suitable example cationic detergents.
Explain the following term with suitable example.
Cationic detergents
Explain the following term with suitable example:
cationic detergents
