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Soft Water

Saponificatio...

Question

Saponification is –

A

A process of preparing soap solution by dissolving soap in water

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B

A reaction of ester of fatty acid with aqueous sodium or potassium hydroxide

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C

A process of precipitating soap from colloidal solution of soap and glycerol

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D

An industrial term used in laundry industry for dry cleaning.

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Solution

The correct option is B A reaction of ester of fatty acid with aqueous sodium or potassium hydroxide
Saponification is a reaction of ester of fatty acid with aqueous sodium or potassium hydroxide.

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Similar questions

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.

Q. Consider the following two statements about soap and detergent –
(i) Soaps and detergents are salts of long chain fatty acids.
(ii) Both soap and detergent precipitate scum in hard water.
(iii) Soap is sodium or potassium salt of fatty acids whereas detergents are ammoniuma nd sulphonate salts of fatty acids.
Which of the above statements is (are) true?

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. Soaps are sodium or potassium salts of long chain fatty acids.

Soap in the form of micelles is used for cleaning. The micelles stay in the solution as a colloid and do not come together to precipitate because of:

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