1. Which one of the following four schemes (A-D) represents a step in the mechanism of the reaction in the box? Cl2, light (hv) CI + HCI H Cl-H A B H C D H OB OD oc O A
1. Which one of the following four schemes (A-D) represents a step in the mechanism of the reaction in the box? Cl2, light (hv) CI + HCI H Cl-H A B H C D H OB OD oc O A
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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![**Question:**
1. Which one of the following four schemes (A-D) represents a step in the *mechanism* of the reaction in the box?
**Reaction in the Box:**
\[ \text{(Isobutane)} \rightarrow \text{(Chlorination)} \rightarrow \text{(Chloro isobutane) + HCl} \]
**Reagents:** \(\text{Cl}_2, \text{light (hv)}\)
**Schemes:**
- **A:** Shows the abstraction of a hydrogen atom from isobutane by a chlorine radical (\(\text{Cl}^\cdot\)) to form isobutyl radical and HCl.
- **B:** Depicts a chlorine atom (\(\text{Cl}^\cdot\)) being added to a hydrogen, with an incorrect depiction of bond breaking and forming.
- **C:** Illustrates a chlorine molecule (\(\text{Cl}_2\)) approaching isobutane without cleavage, which is not typical in radical chlorination.
- **D:** Represents an abstraction of a hydrogen atom from isobutane by chlorine radical (\(\text{Cl}^\cdot\)), forming isobutyl radical and HCl.
**Multiple Choice Options:**
- ○ B
- ○ D
- ○ C
- ○ A
The correct answer represents the radical chain initiation and propagation step involving the abstraction of a hydrogen by a chlorine radical, which is typical for radical halogenation reactions.
**Graphs/Diagrams:**
- **Scheme A:** Displays an arrow from the hydrogen on isobutane to a chlorine radical, indicating the generation of isobutyl radical and HCl.
- **Scheme B:** Incorrectly shows a chlorine atom directly forming a new bond with hydrogen without any radical process.
- **Scheme C:** Shows two chlorine atoms approaching the isobutane, not representing radical formation.
- **Scheme D:** Similar to Scheme A with accurate radical abstraction depiction.
**Answer: Choice D**](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F41fa2301-4e12-4c15-83bb-c01cb78ad81c%2Fd50a4abb-ac95-4e2b-a341-027891de822a%2Fb5e8ceo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Question:**
1. Which one of the following four schemes (A-D) represents a step in the *mechanism* of the reaction in the box?
**Reaction in the Box:**
\[ \text{(Isobutane)} \rightarrow \text{(Chlorination)} \rightarrow \text{(Chloro isobutane) + HCl} \]
**Reagents:** \(\text{Cl}_2, \text{light (hv)}\)
**Schemes:**
- **A:** Shows the abstraction of a hydrogen atom from isobutane by a chlorine radical (\(\text{Cl}^\cdot\)) to form isobutyl radical and HCl.
- **B:** Depicts a chlorine atom (\(\text{Cl}^\cdot\)) being added to a hydrogen, with an incorrect depiction of bond breaking and forming.
- **C:** Illustrates a chlorine molecule (\(\text{Cl}_2\)) approaching isobutane without cleavage, which is not typical in radical chlorination.
- **D:** Represents an abstraction of a hydrogen atom from isobutane by chlorine radical (\(\text{Cl}^\cdot\)), forming isobutyl radical and HCl.
**Multiple Choice Options:**
- ○ B
- ○ D
- ○ C
- ○ A
The correct answer represents the radical chain initiation and propagation step involving the abstraction of a hydrogen by a chlorine radical, which is typical for radical halogenation reactions.
**Graphs/Diagrams:**
- **Scheme A:** Displays an arrow from the hydrogen on isobutane to a chlorine radical, indicating the generation of isobutyl radical and HCl.
- **Scheme B:** Incorrectly shows a chlorine atom directly forming a new bond with hydrogen without any radical process.
- **Scheme C:** Shows two chlorine atoms approaching the isobutane, not representing radical formation.
- **Scheme D:** Similar to Scheme A with accurate radical abstraction depiction.
**Answer: Choice D**
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