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What is the expected product from the addition reaction of 1-pentene (CH₂=CHCH₂CH₂CH₂) with bromine (Br₂)? A) 1,2-dibromopentane B) 1-bromopentane C) 1-bromopentene D) 2-bromopentane E) 1,2-bromopentene

What is the expected product from the addition reaction of 1-pentene (CH₂=CHCH₂CH₂CH₂) with bromine (Br₂)? A) 1,2-dibromopentane B) 1-bromopentane C) 1-bromopentene D) 2-bromopentane E) 1,2-bromopentene

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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--- ### Addition Reaction of 1-Pentene with Bromine #### Question 12 of 30 **What is the expected product from the addition reaction of 1-pentene (CH₂=CHCH₂CH₂CH₃) with bromine (Br₂)?** - **A) 1,2-dibromopentane** - **B) 1-bromopentane** - **C) 1-bromopentene** - **D) 2-bromopentane** - **E) 1,2-bromopentene** In this question, the chemical reaction involves the addition of bromine (Br₂) to 1-pentene. Addition reactions with bromine typically result in a dibromo compound when the bromine adds across the double bond of the alkene. Let's consider the options provided and determine the correct product: 1. **1,2-dibromopentane** - This indicates that bromine atoms are added to the first and second carbon atoms across the double bond. 2. **1-bromopentane** - This indicates only one bromine atom added, which is not typical for a reaction with Br₂. 3. **1-bromopentene** - This compound suggests the addition of a single bromine atom while retaining the double bond, which is also not typical in this reaction. 4. **2-bromopentane** - This indicates a single bromine atom added without specifying the second bromine atom. 5. **1,2-bromopentene** - This suggests an addition across the double bond but keeps one of the double bonds intact, which is incorrect. Upon analyzing the reaction mechanism of an alkene with Br₂, the typical product is a dibromoalkane where bromine atoms add across the double bond. Therefore, the correct answer is: **A) 1,2-dibromopentane** --- **Explanation of Diagram:** The diagram is a question with multiple-choice answers regarding an addition chemical reaction. It asks to identify the expected product when 1-pentene reacts with bromine. The answers are displayed in five rectangular boxes, each indicating a different possible chemical product. --- This type of question tests the understanding of organic chemistry reactions, specifically addition reactions of alkenes with halogens.
Transcribed Image Text:--- ### Addition Reaction of 1-Pentene with Bromine #### Question 12 of 30 **What is the expected product from the addition reaction of 1-pentene (CH₂=CHCH₂CH₂CH₃) with bromine (Br₂)?** - **A) 1,2-dibromopentane** - **B) 1-bromopentane** - **C) 1-bromopentene** - **D) 2-bromopentane** - **E) 1,2-bromopentene** In this question, the chemical reaction involves the addition of bromine (Br₂) to 1-pentene. Addition reactions with bromine typically result in a dibromo compound when the bromine adds across the double bond of the alkene. Let's consider the options provided and determine the correct product: 1. **1,2-dibromopentane** - This indicates that bromine atoms are added to the first and second carbon atoms across the double bond. 2. **1-bromopentane** - This indicates only one bromine atom added, which is not typical for a reaction with Br₂. 3. **1-bromopentene** - This compound suggests the addition of a single bromine atom while retaining the double bond, which is also not typical in this reaction. 4. **2-bromopentane** - This indicates a single bromine atom added without specifying the second bromine atom. 5. **1,2-bromopentene** - This suggests an addition across the double bond but keeps one of the double bonds intact, which is incorrect. Upon analyzing the reaction mechanism of an alkene with Br₂, the typical product is a dibromoalkane where bromine atoms add across the double bond. Therefore, the correct answer is: **A) 1,2-dibromopentane** --- **Explanation of Diagram:** The diagram is a question with multiple-choice answers regarding an addition chemical reaction. It asks to identify the expected product when 1-pentene reacts with bromine. The answers are displayed in five rectangular boxes, each indicating a different possible chemical product. --- This type of question tests the understanding of organic chemistry reactions, specifically addition reactions of alkenes with halogens.
**Organic Chemistry: Stereoisomerism Practice Question** **Question 22 of 30** ### What configuration does the following molecule have? **Diagram:** The diagram depicts a molecule with a chlorine atom (Cl) attached to the left side of the structure. The carbon atoms form a chain with varying bond angles, suggesting the presence of E/Z (trans/cis) or conformational relationships. **Answer Choices:** - **A) trans** - **B) cis** - **C) syn** - **D) gauche** - **E) anti** **Analysis:** In the diagram, the chlorine substituent and the rest of the carbon chain must be analyzed to determine their spatial arrangement. By understanding the spatial placement, we can determine whether the configuration is trans, cis, syn, gauche, or anti. **Explanation:** - **Trans:** Substituents are on opposite sides of a double bond. - **Cis:** Substituents are on the same side of a double bond. - **Syn:** Substituents are on the same side of a planar conformation. - **Gauche:** Substituents are near each other, typically within a 60-degree angle in staggered conformations. - **Anti:** Substituents are opposite each other, typically within a 180-degree angle in staggered conformations.
Transcribed Image Text:**Organic Chemistry: Stereoisomerism Practice Question** **Question 22 of 30** ### What configuration does the following molecule have? **Diagram:** The diagram depicts a molecule with a chlorine atom (Cl) attached to the left side of the structure. The carbon atoms form a chain with varying bond angles, suggesting the presence of E/Z (trans/cis) or conformational relationships. **Answer Choices:** - **A) trans** - **B) cis** - **C) syn** - **D) gauche** - **E) anti** **Analysis:** In the diagram, the chlorine substituent and the rest of the carbon chain must be analyzed to determine their spatial arrangement. By understanding the spatial placement, we can determine whether the configuration is trans, cis, syn, gauche, or anti. **Explanation:** - **Trans:** Substituents are on opposite sides of a double bond. - **Cis:** Substituents are on the same side of a double bond. - **Syn:** Substituents are on the same side of a planar conformation. - **Gauche:** Substituents are near each other, typically within a 60-degree angle in staggered conformations. - **Anti:** Substituents are opposite each other, typically within a 180-degree angle in staggered conformations.
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