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Which of the following shows the initiation step of monochlorination of methane? Cl2 2 CI • Br2 2 Br • II 2 C Cl2 AL НООН 2 НО - B. II IV I and II

Which of the following shows the initiation step of monochlorination of methane? Cl2 2 CI • Br2 2 Br • II 2 C Cl2 AL НООН 2 НО - B. II IV I and II

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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### Monochlorination of Methane: Initiation Step **Question:** Which of the following shows the initiation step of monochlorination of methane? **Options:** I. Cl₂ → 2 Cl• II. Br₂ → 2 Br• III. 2 Cl• → Cl₂ IV. HOOH → 2 HO• **Answer Choices:** A. I B. II C. III D. IV E. I and II **Explanation:** The initiation step in the monochlorination of methane involves the homolytic cleavage of a chlorine molecule (Cl₂) to form two chlorine radicals (Cl•). This process is essential as it generates the reactive species (chlorine radicals) required to proceed with the subsequent propagation steps in the chlorination mechanism. Thus, the correct answer is: **A. I** ### Graph/Diagram Description: In the presented question, there is no graph or diagram, but there are chemical equations that outline various reactions. Specifically: - Option I shows the dissociation of chlorine gas into two chlorine radicals. - Option II shows the dissociation of bromine gas into two bromine radicals. - Option III shows the recombination of chlorine radicals to form chlorine gas. - Option IV shows the dissociation of hydrogen peroxide into two hydroxyl radicals. Understanding which of these depicts the initiation step of monochlorination is crucial for mastering the reaction mechanism.
Transcribed Image Text:### Monochlorination of Methane: Initiation Step **Question:** Which of the following shows the initiation step of monochlorination of methane? **Options:** I. Cl₂ → 2 Cl• II. Br₂ → 2 Br• III. 2 Cl• → Cl₂ IV. HOOH → 2 HO• **Answer Choices:** A. I B. II C. III D. IV E. I and II **Explanation:** The initiation step in the monochlorination of methane involves the homolytic cleavage of a chlorine molecule (Cl₂) to form two chlorine radicals (Cl•). This process is essential as it generates the reactive species (chlorine radicals) required to proceed with the subsequent propagation steps in the chlorination mechanism. Thus, the correct answer is: **A. I** ### Graph/Diagram Description: In the presented question, there is no graph or diagram, but there are chemical equations that outline various reactions. Specifically: - Option I shows the dissociation of chlorine gas into two chlorine radicals. - Option II shows the dissociation of bromine gas into two bromine radicals. - Option III shows the recombination of chlorine radicals to form chlorine gas. - Option IV shows the dissociation of hydrogen peroxide into two hydroxyl radicals. Understanding which of these depicts the initiation step of monochlorination is crucial for mastering the reaction mechanism.
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