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Standard XII

Chemistry

Nitration of Aromatics

Assertion :Be...

Question

Assertion :Benzene forms benzene sulphonic acid with fuming $H_{2} S O_{4}$ at high temperature. Reason: The attacking species is $S O_{3}$

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is D Assertion is incorrect but Reason is correct
With fuming $H_{2} S O_{4}$ or oleum $(c o n c . H_{2} S O_{4} + S O_{3})$ react with benzene at high temperature then it forms m-benzene disulphonic acid. The attacking species for this reaction is $S O_{3}$ .

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Similar questions

Assertion (A) Like bromination of benzene, bromination of phenol is also carried out in the presence of Lewis acid.
Reason (R) Lewis acid polarises the bromine molecule.
(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.

Q. Assertion: The compressibility factor for

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Q. Assertion: The impurities such as

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

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Assertion

Lithium sulphate does not form alums.

Reason

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Assertion :Benzene forms benzene sulphonic acid with fuming H2SO4 at high temperature. Reason: The attacking species is SO3

The correct option is D Assertion is incorrect but Reason is correctWith fuming H2SO4 or oleum (conc.H2SO4+SO3) react with benzene at high temperature then it forms m-benzene disulphonic acid. The attacking species for this reaction is SO3.

Assertion :Benzene forms benzene sulphonic acid with fuming $H_{2} S O_{4}$ at high temperature. Reason: The attacking species is $S O_{3}$

The correct option is D Assertion is incorrect but Reason is correct
With fuming $H_{2} S O_{4}$ or oleum $(c o n c . H_{2} S O_{4} + S O_{3})$ react with benzene at high temperature then it forms m-benzene disulphonic acid. The attacking species for this reaction is $S O_{3}$ .