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प्रश्न
While studying saponification reaction for the preparation of soap, a teacher suggested to a student to add a small quantity of common salt to the reaction mixture. The function of common salt in this reaction is to
(A) reduce the alkalinity of the soap
(B) reduce the acidity of the soap
(C) enhance the cleansing capacity of soap
(D) favour precipitation of soap
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उत्तर
Common salt is added in saponification reaction, as it helps in the precipitation of soap by decreasing the solubility of soap.
Hence, the correct option is D.
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संबंधित प्रश्न
Complete the following chemical equations:CH3COOC2H5+NaOH→
Vinegar is a solution of about:
(a) 5 to 8 per cent ethanoic acid in alcohol
(b) 5 to 8 per cent ethanoic acid in water
(c) 50 to 80 per cent ethanoic acid in water
(d) 50 to 80 per cent ethanoic acid in alcohol
The next higher homologue of ethanoic acid is ______.
What do you notice when acetic acid reacts with litmus?
Give balanced chemical equations for the following conversion :
Ethanoic acid to ethyl ethanote
Rewrite the following statement by selecting the correct option.
The formula of ethanoic acid is _____________.
Observe the figure and write the answers to the following questions.
- Write the name of the reaction shown in the following figure.
- Write the above chemical reaction in the form of a balanced equation.
- Write the name of the product produced in the above reaction, write a use.
- Write the name of the catalyst used in the above reaction.
Write the answers to the questions by observing the following figure.
- Write the chemical reaction shown in the figure above in the form of a balanced equation.
- Write the name of the gas coming out of the large test tube in the above chemical reaction.
- Why do small bubbles appear in the small test tube?
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- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
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Suggest a method of testing the gas liberated in the reaction.
