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Byju's Answer

Standard XII

Chemistry

Auto Protolysis of Water

Assertion :Th...

Question

Assertion :The micelle formed by sodium stearate in water has $- {C O O}^{-}$ groups at the surface. Reason: Surface tension of water is reduced by the addition of stearate.

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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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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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

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Similar questions

Q. Assertion :The micelle formed by sodium stearate in water has

- C O O^{-}

groups at the surface. Reason: Surface tension of water is reduced by addition of stearate.

Choose the correct option.

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

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.

Assertion (A) Addition reaction of water to but-1-ene in acidic medium yields butan-1-ol.
Reason (R) Addition of water in acidic medium proceeds through the formation of primary carbocation.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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Assertion :The micelle formed by sodium stearate in water has −COO− groups at the surface. Reason: Surface tension of water is reduced by the addition of stearate.

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

Assertion :The micelle formed by sodium stearate in water has $- {C O O}^{-}$ groups at the surface. Reason: Surface tension of water is reduced by the addition of stearate.