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Statement I : 2, 3-dibromo butane with Zn-dust gives frans-2-butene as major product.
Statement II : frans-2-butene is more stable than c/s-2-butene.
- a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I
- b)Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement I
- c)Statement I is correct but Statement II is incorrect
- d)Statement II is correct but Statement I is incorrect
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Statement I : 2, 3-dibromo butane with Zn-dust gives frans-2-butene as...
Zn reacts with 2,3 - dibromobutane to give alkene. As trans 2-butene is more stable than cis 2-butene(owing tosterric hinderancce), former is major product.
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Statement I : 2, 3-dibromo butane with Zn-dust gives frans-2-butene as...
Statement I: 2, 3-dibromo butane with Zn-dust gives frans-2-butene as the major product.
Statement II: frans-2-butene is more stable than c/s-2-butene.
Explanation:
To understand the given statements, let's analyze the reaction and the stability of the isomers.
1. Reaction of 2, 3-dibromo butane with Zn-dust:
When 2, 3-dibromo butane reacts with Zn-dust, it undergoes a dehydrohalogenation reaction to form an alkene. The reaction mechanism involves the elimination of two bromine atoms from the adjacent carbon atoms, resulting in the formation of a double bond.
2. Formation of frans-2-butene:
In the given reaction, frans-2-butene is formed as the major product. This is because the Zn-dust mediated dehydrohalogenation reaction follows the anti-elimination mechanism, which leads to the formation of the trans-alkene (frans-2-butene) as the major product.
3. Stability of frans-2-butene:
In general, trans-alkenes are more stable than cis-alkenes. This is due to the absence of steric hindrance between the substituents present on the double bond in the trans-configuration. In the case of frans-2-butene, the substituents (methyl groups) are present on opposite sides of the double bond, resulting in less steric hindrance and greater stability.
Now, let's analyze the given statements:
Statement I: 2, 3-dibromo butane with Zn-dust gives frans-2-butene as the major product.
This statement is correct. The Zn-dust mediated dehydrohalogenation reaction of 2, 3-dibromo butane indeed results in the formation of frans-2-butene as the major product.
Statement II: frans-2-butene is more stable than c/s-2-butene.
This statement is also correct. The trans-configuration of frans-2-butene makes it more stable compared to the cis-configuration of c/s-2-butene.
Explanation of the relationship between the two statements:
Statement II provides the correct explanation for Statement I. The stability of frans-2-butene, due to its trans-configuration, is the reason why it is the major product in the given reaction. The absence of steric hindrance in the trans-configuration allows for a more favorable transition state during the elimination reaction, leading to the formation of frans-2-butene as the major product.
Therefore, both Statement I and Statement II are correct, and Statement II is the correct explanation for Statement I.
Statement II: frans-2-butene is more stable than c/s-2-butene.
Explanation:
To understand the given statements, let's analyze the reaction and the stability of the isomers.
1. Reaction of 2, 3-dibromo butane with Zn-dust:
When 2, 3-dibromo butane reacts with Zn-dust, it undergoes a dehydrohalogenation reaction to form an alkene. The reaction mechanism involves the elimination of two bromine atoms from the adjacent carbon atoms, resulting in the formation of a double bond.
2. Formation of frans-2-butene:
In the given reaction, frans-2-butene is formed as the major product. This is because the Zn-dust mediated dehydrohalogenation reaction follows the anti-elimination mechanism, which leads to the formation of the trans-alkene (frans-2-butene) as the major product.
3. Stability of frans-2-butene:
In general, trans-alkenes are more stable than cis-alkenes. This is due to the absence of steric hindrance between the substituents present on the double bond in the trans-configuration. In the case of frans-2-butene, the substituents (methyl groups) are present on opposite sides of the double bond, resulting in less steric hindrance and greater stability.
Now, let's analyze the given statements:
Statement I: 2, 3-dibromo butane with Zn-dust gives frans-2-butene as the major product.
This statement is correct. The Zn-dust mediated dehydrohalogenation reaction of 2, 3-dibromo butane indeed results in the formation of frans-2-butene as the major product.
Statement II: frans-2-butene is more stable than c/s-2-butene.
This statement is also correct. The trans-configuration of frans-2-butene makes it more stable compared to the cis-configuration of c/s-2-butene.
Explanation of the relationship between the two statements:
Statement II provides the correct explanation for Statement I. The stability of frans-2-butene, due to its trans-configuration, is the reason why it is the major product in the given reaction. The absence of steric hindrance in the trans-configuration allows for a more favorable transition state during the elimination reaction, leading to the formation of frans-2-butene as the major product.
Therefore, both Statement I and Statement II are correct, and Statement II is the correct explanation for Statement I.
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Statement I : 2, 3-dibromo butane with Zn-dust gives frans-2-butene as major product.Statement II : frans-2-butene is more stable than c/s-2-butene.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. Can you explain this answer?
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Statement I : 2, 3-dibromo butane with Zn-dust gives frans-2-butene as major product.Statement II : frans-2-butene is more stable than c/s-2-butene.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. 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 Statement I : 2, 3-dibromo butane with Zn-dust gives frans-2-butene as major product.Statement II : frans-2-butene is more stable than c/s-2-butene.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. 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 Statement I : 2, 3-dibromo butane with Zn-dust gives frans-2-butene as major product.Statement II : frans-2-butene is more stable than c/s-2-butene.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. Can you explain this answer?.
Statement I : 2, 3-dibromo butane with Zn-dust gives frans-2-butene as major product.Statement II : frans-2-butene is more stable than c/s-2-butene.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. 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 Statement I : 2, 3-dibromo butane with Zn-dust gives frans-2-butene as major product.Statement II : frans-2-butene is more stable than c/s-2-butene.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. 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 Statement I : 2, 3-dibromo butane with Zn-dust gives frans-2-butene as major product.Statement II : frans-2-butene is more stable than c/s-2-butene.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Statement I : 2, 3-dibromo butane with Zn-dust gives frans-2-butene as major product.Statement II : frans-2-butene is more stable than c/s-2-butene.a)Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement Ib)Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement Ic)Statement I is correct but Statement II is incorrectd)Statement II is correct but Statement I is incorrectCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
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