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Which of the following statements is correct?
  • a)
    The addition of H2 to cis-2, 3-dibromobutene produces meso-2, 3-dibromobutane.
  • b)
    The addition of H2 to trans-2, 3-dibromobutene produces meso-2, 3-dibromobutane.
  • c)
    The hydroxylation of cis-2, 3-dimethylbutene with Baeyer's reagent produces racemic-2, 3-dihydroxybutane.
  • d)
    The hydroxylation of trans-2, 3-dimethylbutene with Baeyer's reagent produces meso-2, 3-dihydroxybutane.
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Which of the following statements is correct?a)The addition of H2 to ...
Statement: The addition of H2 to cis-2,3-dibromobutene produces meso-2,3-dibromobutane.

Explanation:
To understand the correctness of the given statement, let's first discuss the concept of stereoisomerism and the addition of hydrogen to alkenes.

Stereoisomerism:
Stereoisomerism is a type of isomerism where compounds have the same molecular formula but differ in the spatial arrangement of atoms. Two common types of stereoisomers are cis-trans isomers and enantiomers.

- Cis-trans isomers: In cis-trans isomers, the connectivity of atoms is the same, but the groups attached to the double bond are arranged differently in space.
- Enantiomers: Enantiomers are non-superimposable mirror images of each other. They have the same connectivity of atoms and the same groups attached to the chiral carbon(s), but they differ in their spatial arrangement.

Addition of Hydrogen to Alkenes:
The addition of hydrogen (H2) to alkenes is a type of reaction known as hydrogenation. It involves the addition of hydrogen across the double bond of an alkene, resulting in the formation of an alkane.

Now, let's analyze the given statement:

A) The addition of H2 to cis-2,3-dibromobutene produces meso-2,3-dibromobutane:
To determine the correctness of this statement, we need to understand the stereochemistry of the reaction.

Meso-2,3-dibromobutane:
Meso-2,3-dibromobutane is a compound that possesses an internal plane of symmetry, which allows it to be optically inactive. It has two chiral carbons, but the presence of an internal plane of symmetry makes it meso.

Explanation:
- When H2 is added to cis-2,3-dibromobutene, the double bond breaks, and two hydrogen atoms are added across the double bond.
- The addition of hydrogen in a syn fashion (from the same side of the double bond) leads to the formation of meso-2,3-dibromobutane.
- Meso-2,3-dibromobutane is formed because the two bromine atoms, which were originally on the same side of the double bond, end up on the same side of the resulting single bond.

Therefore, the given statement is correct. The addition of H2 to cis-2,3-dibromobutene produces meso-2,3-dibromobutane.
Free Test
Community Answer
Which of the following statements is correct?a)The addition of H2 to ...
(1) Hydrogenation of an alkene is a heterogeneous process which occurs on the surface of a solid catalyst (PtO2 or Pd/C). The addition occurs with syn stereochemistry (both hydrogens add from the same side). For cis isomer, the product is a meso compound.
(2) The product is a racemic mixture.
(3) The addition of two hydroxyl groups involves syn addition (on the same side of a double bond). The result is same as that of hydrogenation. The cis isomer produces meso compound.
(4) The addition of two hydroxyl groups involves syn addition (on the same side of a double bond). The result is same as that of hydrogenation. The trans isomer produces racemic mixture.
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Which of the following statements is correct?a)The addition of H2 to cis-2, 3-dibromobutene produces meso-2, 3-dibromobutane.b)The addition of H2 to trans-2, 3-dibromobutene produces meso-2, 3-dibromobutane.c)The hydroxylation of cis-2, 3-dimethylbutene with Baeyer's reagent produces racemic-2, 3-dihydroxybutane.d)The hydroxylation of trans-2, 3-dimethylbutene with Baeyer's reagent produces meso-2, 3-dihydroxybutane.Correct answer is option 'A'. Can you explain this answer?
Question Description
Which of the following statements is correct?a)The addition of H2 to cis-2, 3-dibromobutene produces meso-2, 3-dibromobutane.b)The addition of H2 to trans-2, 3-dibromobutene produces meso-2, 3-dibromobutane.c)The hydroxylation of cis-2, 3-dimethylbutene with Baeyer's reagent produces racemic-2, 3-dihydroxybutane.d)The hydroxylation of trans-2, 3-dimethylbutene with Baeyer's reagent produces meso-2, 3-dihydroxybutane.Correct answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Which of the following statements is correct?a)The addition of H2 to cis-2, 3-dibromobutene produces meso-2, 3-dibromobutane.b)The addition of H2 to trans-2, 3-dibromobutene produces meso-2, 3-dibromobutane.c)The hydroxylation of cis-2, 3-dimethylbutene with Baeyer's reagent produces racemic-2, 3-dihydroxybutane.d)The hydroxylation of trans-2, 3-dimethylbutene with Baeyer's reagent produces meso-2, 3-dihydroxybutane.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is correct?a)The addition of H2 to cis-2, 3-dibromobutene produces meso-2, 3-dibromobutane.b)The addition of H2 to trans-2, 3-dibromobutene produces meso-2, 3-dibromobutane.c)The hydroxylation of cis-2, 3-dimethylbutene with Baeyer's reagent produces racemic-2, 3-dihydroxybutane.d)The hydroxylation of trans-2, 3-dimethylbutene with Baeyer's reagent produces meso-2, 3-dihydroxybutane.Correct answer is option 'A'. Can you explain this answer?.
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