Which of the following will be the best leaving group in an SN2 reaction?1,2,3, or 4? The image displays chemical structures labeled with numbers:1. **F⁻**: This represents a fluoride ion, indicated by the negative charge.2. **CH₃⁻**: This represents a methyl anion, also negatively charged.3. **CH₃SO₃⁻**: This denotes a methanesulfonate ion, where a central sulfur atom is double-bonded to two oxygen atoms and single-bonded to another oxygen atom bearing a negative charge. Additionally, the sulfur is bonded to a methyl group (CH₃).4. **HO⁻**: This represents a hydroxide ion, with a negative charge.These structures likely depict anions that might be involved in various chemical reactions or processes.

Answered: OCHS H,C-S но 1 4 3.

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

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Which of the following will be the best leaving group in an SN2 reaction?

1,2,3, or 4?

The image displays chemical structures labeled with numbers:

1. **F⁻**: This represents a fluoride ion, indicated by the negative charge.
2. **CH₃⁻**: This represents a methyl anion, also negatively charged.
3. **CH₃SO₃⁻**: This denotes a methanesulfonate ion, where a central sulfur atom is double-bonded to two oxygen atoms and single-bonded to another oxygen atom bearing a negative charge. Additionally, the sulfur is bonded to a methyl group (CH₃).
4. **HO⁻**: This represents a hydroxide ion, with a negative charge.

These structures likely depict anions that might be involved in various chemical reactions or processes.

Expert Solution

Step 1

The leaving group ability of a species depends on the stability of the anion. As the stability of the anion increases the leaving group ability of the anion also increases.

Step 2

The leaving group ability of different anions can be compared on the basis of the conjugate acid of the anion. As the strength of the conjugate increases the leaving group ability of the anion increases.

The increasing order of acidity of the conjugate acid of the anions are as follows:

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