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Preparations and Uses of Sodium Carbonate

During prepar...

Question

During preparation of soap, sodium is used as:

A

precipitate the soap

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B

dehydration of soap

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C

as a catalyst

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D

for smoothness of soap

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Solution

The correct option is A precipitate the soap
$N a C l$ is used for the precipitation of soap.

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Similar questions

Q. (a) Explain the process of preparation of soap in laboratory.
(b) Why is common salt (sodium chloride) added during the preparation of soap?
(c) Why is soap not suitable for washing clothes when the water is hard?

Q. Consider the following two statements about soap and detergent –
(i) Soap is natural while detergent is a synthetic product.
(ii) Both soap and detergent precipitate scum in hard water
(iii) Soap is sodium or potassium salt of fatty acids
Which of the above statements is (are) true?

Q. In the preparation of a soap, a fatty acid containing less than eight carbon atoms is not used, because the soap obtained:

Q. What is soap? Explain the preparation of soap giving chemical equation.

Q. Assertion: Sodium chloride is added to precipitate soap after saponification.

Reason: Hydrolysis of esters of long chain fatty acids by alkali produces soap in colloidal form.

Choose the correct option.

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Preparations and Uses of Sodium Carbonate

Standard XII Chemistry

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