Advertisements
Advertisements
प्रश्न
Distinguish between esterfication and saponification reaction with the help of the chemical equations for each.
उत्तर
Esterification reaction is opposite/reverse of saponification reaction.
In esterification, a carboxylic acid and an alcohol react to form ester in presence of acid.
RCOOH + R′OH →H+ RCOOR′ + H2O
Whereas, in saponification reaction an ester reacts with a strong base or an acid to give alcohol and carboxylic acid.
RCOOR′ + NaOH → RCOONa + R′OH
संबंधित प्रश्न
In a locality, hard water, required for an experiment, is not available. However, the following salts are available in the school laboratory:
1. Sodium sulphate
2. Calcium sulphate
3. Magnesium chloride
4. Sodium chloride
5. Calcium chloride
6. Potassium sulphate
Which of the above salts may be dissolved in water to obtain hard water for the experiment?
(A) 2, 3 and 5
(B) 1, 2 and 5
(C) 1, 2, 4 and 6
(D) 3 and 5 only
Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents such as ethanol also?
A student took four test tubes P, Q, R and S and filled about 8 mL of distilled water in each. After that he dissolved an equal amount of Na2SO4 in P, K2SO4 in Q, CaSO4 in R and MgSO4 in S. On adding an equal amount of soap solution and shaking each test tube well, a good amount of lather will be obtained in the test tubes:
(a) P and Q
(b) P and R
(c) P, Q and S
(d) Q, R and S
State one advantage of soaps over detergent.
What is a detergent? Name one detergent.
Differentiate between:
Detergents and Soaps.
What is the difference between soaps and detergents? State, in brief, the cleansing action of soaps in removing an oily spot from a fabric. Why are soaps not very effective when a fabric is washed in hard water? How is this problem resolved?
Write an answer to the following question.
Name three chemicals responsible for the surface activity of various detergents.
Water, coconut oil, and _______ are necessary for soap preparation.
TFM in soaps represents ______ content in soap.
