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b. For each of the following pairs, pick which one has the better leaving group by circling the correct answer. (HINT: look at the pK, values of the conjugate acid of the L.G.) b) COH2 NH3 or .CI or с) .F CN d) LOCH3 CH3 or or

b. For each of the following pairs, pick which one has the better leaving group by circling the correct answer. (HINT: look at the pK, values of the conjugate acid of the L.G.) b) COH2 NH3 or .CI or с) .F CN d) LOCH3 CH3 or or

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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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For each of the following pairs, pick which one has the better leaving group.

**Problem: Evaluating Leaving Groups** **Instruction:** For each of the following pairs, pick which one has the better leaving group by circling the correct answer. *(Hint: Look at the pKa values of the conjugate acid of the leaving group.)* **a)** Cyclohexane with an attached \( \text{NH}_3^+ \) group vs. cyclohexane with an attached ester group \( \text{O=C-OCH}_3 \). **b)** Cyclohexane with an attached \( \text{OH}_2^+ \) group vs. cyclohexane with an attached \( \text{Cl} \) group. **c)** Cyclohexane with an attached \( \text{F} \) group vs. cyclohexane with an attached \( \text{CN} \) group. **d)** Cyclohexane with an attached \( \text{OCH}_3 \) group vs. cyclohexane with an attached \( \text{CH}_3 \) group. **Explanation:** Consider the stability of the leaving group based on the pKa values of its conjugate acid. The lower the pKa value, the stronger the acid, and the better the leaving group.
Transcribed Image Text:**Problem: Evaluating Leaving Groups** **Instruction:** For each of the following pairs, pick which one has the better leaving group by circling the correct answer. *(Hint: Look at the pKa values of the conjugate acid of the leaving group.)* **a)** Cyclohexane with an attached \( \text{NH}_3^+ \) group vs. cyclohexane with an attached ester group \( \text{O=C-OCH}_3 \). **b)** Cyclohexane with an attached \( \text{OH}_2^+ \) group vs. cyclohexane with an attached \( \text{Cl} \) group. **c)** Cyclohexane with an attached \( \text{F} \) group vs. cyclohexane with an attached \( \text{CN} \) group. **d)** Cyclohexane with an attached \( \text{OCH}_3 \) group vs. cyclohexane with an attached \( \text{CH}_3 \) group. **Explanation:** Consider the stability of the leaving group based on the pKa values of its conjugate acid. The lower the pKa value, the stronger the acid, and the better the leaving group.
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