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.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Both Assertion and Reason are incorrect

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Sodium chloride is added to precipitate soap after saponification.
Salt is added to decrease the solubility of soap and it help precipitate out (or salt out) from the aqueous solution.

Hydrolysis of esters of long chain fatty acids by alkali produces soap in colloidal form.
Thus, when oils and fats (glycerides) are heated with a solution of sodium hydroxide, they break down to sodium salt of the respective fatty acid (called soap) and glycerol The process is called saponification.

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Similar questions

Assertion and Reason
In the following questions a statement of assertion (A) followed by a statement reason (R) is given. Choose the correct answer out of the following choice..
(a) Assertion and reason both are correct statements but reason does not explain assertion.
(b) Assertion and reason both are correct and reason explains asssWon.
(c) Both assertion and reason are Wrong statements.
(d) Assertion is correct statement reason is wrong statement.
(e) Assertion is wrong statement reason is correct statement.

Assertion (A) Sodium chloride is added to precipitate soap after saponification. Reason (R) Hydrolysis of esters of long chain fatty adds by alkali produces soap in colloidal form.

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

.

Reason:

CaO

formed by decomposition of

{CaCO}_{3}

reacts with

{SiO}_{2}

to form slag.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Assertion: All the points (1, 0), (-1, 0), (2, 0) and (5, 0) lie on the x – axis.

Reason: Equation of the x – axis is y = 0
Now, choose the correct option.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

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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.

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.