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Which alkene is lower in energy? O The alkene on the left is lower in energy The alkene on the right is lower in energy

Which alkene is lower in energy? O The alkene on the left is lower in energy The alkene on the right is lower in energy

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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### Question 3 **Which alkene is lower in energy?** **Diagrams:** The question presents two structural diagrams of alkenes for comparison: 1. **Left Diagram:** - Displays a six-membered carbon ring (cyclohexane) with a double bond adjacent to a carbon group with one more carbon atom and a double bonded carbon to the second carbon atom. 2. **Right Diagram:** - Displays a six-membered carbon ring (cyclohexane) with a double bond adjacent to a carbon group with one more carbon atom and a double bonded carbon to the first carbon atom. **Options:** - \( \bigcirc \) The alkene on the left is lower in energy - \( \bigcirc \) The alkene on the right is lower in energy ### Explanation In organic chemistry, the stability of alkenes can often be determined by the degree of substitution. Generally, more substituted alkenes (those with more alkyl groups attached to the carbons of the double bond) are more stable and thus lower in energy. In this context: - The structure on the **left** is a 1-methylcyclohex-1-ene, with the double bond outside the ring and away from the larger ring structure which might introduce more strain or less favorable electronic interactions. - The structure on the **right** is a 1-methylcyclohex-2-ene, with the double bond being inside the ring, which can be more strained due to the smaller ring size adjacent to the cyclohexane structure. Therefore, students are required to determine the lower energy structure based on principles of alkene stability.
Transcribed Image Text:### Question 3 **Which alkene is lower in energy?** **Diagrams:** The question presents two structural diagrams of alkenes for comparison: 1. **Left Diagram:** - Displays a six-membered carbon ring (cyclohexane) with a double bond adjacent to a carbon group with one more carbon atom and a double bonded carbon to the second carbon atom. 2. **Right Diagram:** - Displays a six-membered carbon ring (cyclohexane) with a double bond adjacent to a carbon group with one more carbon atom and a double bonded carbon to the first carbon atom. **Options:** - \( \bigcirc \) The alkene on the left is lower in energy - \( \bigcirc \) The alkene on the right is lower in energy ### Explanation In organic chemistry, the stability of alkenes can often be determined by the degree of substitution. Generally, more substituted alkenes (those with more alkyl groups attached to the carbons of the double bond) are more stable and thus lower in energy. In this context: - The structure on the **left** is a 1-methylcyclohex-1-ene, with the double bond outside the ring and away from the larger ring structure which might introduce more strain or less favorable electronic interactions. - The structure on the **right** is a 1-methylcyclohex-2-ene, with the double bond being inside the ring, which can be more strained due to the smaller ring size adjacent to the cyclohexane structure. Therefore, students are required to determine the lower energy structure based on principles of alkene stability.
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