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B. CIRCLE (CROSS-OUT) the FASTEST (SLOWEST) Nucleophilic Substitution Br + H3C-O + H3C-O .CI

B. CIRCLE (CROSS-OUT) the FASTEST (SLOWEST) Nucleophilic Substitution Br + H3C-O + H3C-O .CI

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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Which nuclearphillic substitution is the fastest

### Transcription: **B. CIRCLE (CROSS-OUT) the FASTEST (SLOWEST) Nucleophilic Substitution** There are three chemical reactions illustrated: 1. A molecule with an iodine (I) group reacting with a methoxide ion (H₃C–O⁻). 2. A molecule with a bromine (Br) group reacting with a methoxide ion (H₃C–O⁻). 3. A molecule with a chlorine (Cl) group reacting with a methoxide ion (H₃C–O⁻). Above the third reaction, there's a handwritten note: "I > Br > Cl" and an arrow indicating that iodine is circled as the fastest, and chlorine is crossed out as the slowest. ### Diagram Explanation: - The first reaction involves a secondary alkyl iodide. - The second reaction involves a secondary alkyl bromide. - The third reaction involves a secondary alkyl chloride. - The iodine-containing reaction is circled, indicating it's the fastest nucleophilic substitution. - The chlorine-containing reaction is crossed out, indicating it's the slowest nucleophilic substitution. This activity helps students understand the rate of nucleophilic reactions based on the leaving group, with iodide being the best leaving group and chloride being the worst among the three.
Transcribed Image Text:### Transcription: **B. CIRCLE (CROSS-OUT) the FASTEST (SLOWEST) Nucleophilic Substitution** There are three chemical reactions illustrated: 1. A molecule with an iodine (I) group reacting with a methoxide ion (H₃C–O⁻). 2. A molecule with a bromine (Br) group reacting with a methoxide ion (H₃C–O⁻). 3. A molecule with a chlorine (Cl) group reacting with a methoxide ion (H₃C–O⁻). Above the third reaction, there's a handwritten note: "I > Br > Cl" and an arrow indicating that iodine is circled as the fastest, and chlorine is crossed out as the slowest. ### Diagram Explanation: - The first reaction involves a secondary alkyl iodide. - The second reaction involves a secondary alkyl bromide. - The third reaction involves a secondary alkyl chloride. - The iodine-containing reaction is circled, indicating it's the fastest nucleophilic substitution. - The chlorine-containing reaction is crossed out, indicating it's the slowest nucleophilic substitution. This activity helps students understand the rate of nucleophilic reactions based on the leaving group, with iodide being the best leaving group and chloride being the worst among the three.
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