4. A double bond in a six-membered ring is usually more stable in an endocyclic position than in an exocyclic position. Hydrogenation data on two pairs of compounds follow. One pair suggests that the energy difference between endocyclic and exocyclic double bonds is about 9 kJ/mol. The other pair suggests an energy difference of about 5 kJ/mol. Which number do you trust as being more representative of the actual energy difference? Explain your answer. endocyclic exоcyclic 107 116 105 110 heats of hydrogenation (kJ/mol)
4. A double bond in a six-membered ring is usually more stable in an endocyclic position than in an exocyclic position. Hydrogenation data on two pairs of compounds follow. One pair suggests that the energy difference between endocyclic and exocyclic double bonds is about 9 kJ/mol. The other pair suggests an energy difference of about 5 kJ/mol. Which number do you trust as being more representative of the actual energy difference? Explain your answer. endocyclic exоcyclic 107 116 105 110 heats of hydrogenation (kJ/mol)
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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
Transcribed Image Text:4. A double bond in a six-membered ring is usually more stable in an endocyclic position than
in an exocyclic position. Hydrogenation data on two pairs of compounds follow. One pair
suggests that the energy difference between endocyclic and exocyclic double bonds is
about 9 kJ/mol. The other pair suggests an energy difference of about 5 kJ/mol. Which
number do you trust as being more representative of the actual energy difference? Explain
your answer.
endocyclic
exоcyclic
107
116
105
110
heats of hydrogenation (kJ/mol)
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