Advertisements
Advertisements
प्रश्न
Differentiate between:
Detergents and Soaps.
Advertisements
उत्तर
Differentiate between: Detergents and soaps
| Detergents | Soaps | ||
| i. | Detergents are generally ammonium or sulphonate salts of long-chain carboxylic acids. | i. | Soaps are sodium or potassium salts of long-chain carboxylic acids. |
| ii. | Detergents have a strong cleansing action. | ii. | Soaps have relatively weak cleansing action. |
| iii. | Oils or fats are not used in their manufacture, usually, petrochemicals are used to produce detergents. | iii. | Vegetable oils or animal fats are used along with hydroxide of sodium or potassium to manufacture soaps. |
| iv. | They function well in hard or soft water. | iv. | They do not work well in had water but work well in soft water. |
APPEARS IN
संबंधित प्रश्न
Why do soaps not form lather in hard water?
While preparing soap a small quantity of common salt is generally added to the reaction mixture of vegetable oil and sodium hydroxide. Which one of the following may be the purpose of adding common salt?
(A) To reduce the basic nature of the soap
(B) To make the soap neutral
(C) To enhance the cleansing power of the soap
(D) To favour the precipitation of the soap
People use a variety of methods to wash clothes. Usually after adding the soap, they ‘beat’ the clothes on a stone, or beat it with a paddle, scrub with a brush or the mixture is agitated in a washing machine. Why is agitation necessary to get clean clothes?
Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents such as ethanol also?
State one advantage of soaps over detergents.
Why is common salt (sodium chloride) added during the preparation of soap?
How is soap made? Write a word equation involved in soap making.
What is the advantage of detergents over soaps for washing clothes?
The chemical which is not required for the preparation of soap in the laboratory is:
(a) vegetable oil
(b) baking soda
(c) caustic soda
(d) common salt
Give the reason of formation of scum when soaps are used with hard water.
A student takes 4 mL of distilled water in each of four test tubes I, II, III and IV, and then dissolves an equal amount of four different salts namely NaCl in I, CaCl2 in II, MgCl2 in III and KCl in IV. He then adds 8 drops of the given soap solution to each test tube and shakes the contents of the test tube 10 times. In which test tubes will enough lather (foam) be formed ?
(A) I and II
(B) II and III
(C) I and IV
(D) III and IV
What is a soap?
Explain why soap cannot be used in hard water.
What are the three main constituents of soap?
The soap molecule has a
- Write the formula and draw electron dot structure of carbon tetrachloride.
- What is saponification? Write the reaction involved in this process.
What are soaps?
What are the similarities between Soap and synthetic detergent.
