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Direction (Q. No. 22 - 25) This section contains 4 questions. When worked out will result in an integer from 0 to 9 (both inclusive).


Q. C6H4Br2(P) is a dibromo benzene and it is the less polar isomer of its two polar isomers. If P is treated with conc. HNO3 and conc -H2SO4 mixture, in principle, how many mono nitration products are expected?

Correct answer is '2'. Can you explain this answer?
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Direction (Q. No. 22 - 25) This section contains 4 questions. When wor...
Explanation:


When C6H4Br2(P) is treated with a mixture of concentrated HNO3 and concentrated H2SO4, it undergoes nitration. Mono nitration products are expected from this reaction.




Reasoning:

  • The presence of two bromine atoms in C6H4Br2(P) makes it less polar than its two polar isomers (ortho and para).

  • When C6H4Br2(P) is treated with a mixture of concentrated HNO3 and concentrated H2SO4, it undergoes nitration.

  • Because of the less polar nature of C6H4Br2(P), it is expected to react with nitric acid to form three mononitration products.

  • The three possible mononitration products are:

    • 2-nitro-1-bromobenzene

    • 4-nitro-1-bromobenzene

    • 2,4-dinitro-1-bromobenzene




Therefore, when C6H4Br2(P) is treated with a mixture of concentrated HNO3 and concentrated H2SO4, three mononitration products are expected.
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Direction (Q. No. 22 - 25) This section contains 4 questions. When wor...
Understanding the Compound

- The compound C6H4Br2(P) is a dibromo benzene. This means it has two bromine atoms attached to the benzene ring.

Understanding Isomerism

- The less polar isomer refers to the geometric arrangement of the bromine atoms on the benzene ring that results in less polarity.
- In the case of dibromo benzene, there are three possible geometric arrangements (ortho, meta, and para) but only ortho-dibromo benzene and para-dibromo benzene are polar. The less polar of the two is the para isomer.

Nitration Reaction

- Nitration is a general class of a chemical process for the introduction of a nitro group into an organic chemical compound.
- The nitration of benzene involves substitution of a hydrogen atom by a nitro group (-NO2) and this is facilitated by a mixture of concentrated nitric acid (HNO3) and sulfuric acid (H2SO4).

Mono Nitration Products

- Considering that the compound is para-dibromo benzene, the nitration can occur at any of the 4 remaining carbon atoms in the benzene ring.
- However, since the question asks for mono nitration products (meaning only one nitro group is added), the number of unique products will depend on the symmetry of the molecule.
- For para-dibromo benzene, the molecule is symmetric. Nitration at any of the 4 remaining positions will result in only 2 unique mono-nitration products due to this symmetry.

So, the answer is 2.
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Direction (Q. No. 22 - 25) This section contains 4 questions. When worked out will result in an integer from 0 to 9 (both inclusive).Q.C6H4Br2(P) is a dibromo benzene and it is the less polar isomer of its two polar isomers. If P is treated with conc. HNO3 and conc -H2SO4 mixture, in principle, how many mono nitration products are expected?Correct answer is '2'. Can you explain this answer?
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Direction (Q. No. 22 - 25) This section contains 4 questions. When worked out will result in an integer from 0 to 9 (both inclusive).Q.C6H4Br2(P) is a dibromo benzene and it is the less polar isomer of its two polar isomers. If P is treated with conc. HNO3 and conc -H2SO4 mixture, in principle, how many mono nitration products are expected?Correct answer is '2'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Direction (Q. No. 22 - 25) This section contains 4 questions. When worked out will result in an integer from 0 to 9 (both inclusive).Q.C6H4Br2(P) is a dibromo benzene and it is the less polar isomer of its two polar isomers. If P is treated with conc. HNO3 and conc -H2SO4 mixture, in principle, how many mono nitration products are expected?Correct answer is '2'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. No. 22 - 25) This section contains 4 questions. When worked out will result in an integer from 0 to 9 (both inclusive).Q.C6H4Br2(P) is a dibromo benzene and it is the less polar isomer of its two polar isomers. If P is treated with conc. HNO3 and conc -H2SO4 mixture, in principle, how many mono nitration products are expected?Correct answer is '2'. Can you explain this answer?.
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