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प्रश्न
- Write the formula and draw electron dot structure of carbon tetrachloride.
- What is saponification? Write the reaction involved in this process.
उत्तर
- The formula for carbon tetrachloride is CCl4.
- When an ester is treated with an alkali, it gives alcohol and sodium ethanoate (sodium salt of carboxylic acid).
\[\ce{CH3COOC2H5 \overset{NaOH}{->}C2H5OH + CH3COONa}\]
This reaction is known as saponification because it is used in the preparation of soap.
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संबंधित प्रश्न
Why do soaps not form lather in hard water?
A student takes about 4 ml of distilled water in four test tubes marked P, Q, R and S. He then dissolves in each test tube an equal amount of one salt in one test tube, namely sodium sulphate in P, potassium sulphate in Q, calcium sulphate in R and magnesium sulphate in S. After that he adds an equal amount of soap solution in each test tube. On shaking each of these test tubes well, he observes a good amount of lather (foam) in the test tube marked
(A) P and Q
(B) Q and R
(C) P, Q and S
(D) P, R and S
Explain the formation of scum when hard water is treated with soap.
Why have detergents replaced soap as a washing agent?
What is the advantage of detergents over soaps for washing clothes? Also state one disadvantage.
In a soap micelle, the soap molecules are arranged radially with:
(a) ionic ends directed towards the centre and hydrocarbon ends directed outwards
(b) hydrocarbon ends directed towards the centre and ionic ends directed outwards
(c) both ionic ends and hydrocarbon ends directed toward the centre
(d) both hydrocarbon ends and ionic ends directed outwards
The alkaline hydrolysis of fatty acids is termed as ______
Analogy:
Used to join components: Adhesives:: Clean the body ______.
______ to remove strong strains on the clothes.
In the soap micelles
