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PQ-13. What best describes the most stable conformation of trans-1-isopropyl-3-methylcyclohexane? (A) The isopropyl group is equatorial, and the methyl group is axial. (B) The isopropyl group is axial, and the methyl group is equatorial. (C) Both the isopropyl and methyl groups are equatorial. (D) Both the isopropyl and methyl groups are axial.

PQ-13. What best describes the most stable conformation of trans-1-isopropyl-3-methylcyclohexane? (A) The isopropyl group is equatorial, and the methyl group is axial. (B) The isopropyl group is axial, and the methyl group is equatorial. (C) Both the isopropyl and methyl groups are equatorial. (D) Both the isopropyl and methyl groups are axial.

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
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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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What structure is identical to this molecule? (A) H3C (A) CH3 OH H3C (B) (A) (B) H₂C PQ-14. Which compound has the IUPAC name trans-1-chloro-3-ethylcyclohexane? CI CI (A) I and II (B) CH3 OH PQ-13. What best describes the most stable conformation of trans-1-isopropyl-3-methylcyclohexane? (A) The isopropyl group is equatorial, and the methyl group is axial. (B) The isopropyl group is axial, and the methyl group is equatorial. (C) Both the isopropyl and methyl groups are equatorial. (D) Both the isopropyl and methyl groups are axial. PQ-18. Which is/are optically inactive? H CH3 H PQ-16. Which value is closest to the internal C-C-C bond angle in cyclohexane? (A) 90⁰ (B) 100° (C) 110⁰ OH к он CH3 (C) CH3 I (B) II only H. (C) HO 50 H3C PQ-15. What factor is responsible for a greater heat of combustion per CH₂ for cyclopropane than the heat of combustion per CH₂ for cyclohexane. (A) Cyclohexane has a different hydrogen-to-carbon atom ratio than cyclopropane. (B) Cyclohexane has greater ring strain than cyclopropane. (C) Cyclopropane is a strained ring relative to cyclohexane. (D) Cyclohexane has more carbon atoms than cyclopropane. (C) CH3 HO CH3 PQ-17. Which molecules would have the highest heat of combustion, or release most energy when burned to produce CO₂ and H₂O? OH OH H CH3 CI CH3 II (C) III only CH3 (D) III H-OH H H - OH CH 3 III H (D) CH3 H3C (D) CH₂CH3 H3C (D) 120° CH 3 OH (D) II and III CI
Transcribed Image Text:What structure is identical to this molecule? (A) H3C (A) CH3 OH H3C (B) (A) (B) H₂C PQ-14. Which compound has the IUPAC name trans-1-chloro-3-ethylcyclohexane? CI CI (A) I and II (B) CH3 OH PQ-13. What best describes the most stable conformation of trans-1-isopropyl-3-methylcyclohexane? (A) The isopropyl group is equatorial, and the methyl group is axial. (B) The isopropyl group is axial, and the methyl group is equatorial. (C) Both the isopropyl and methyl groups are equatorial. (D) Both the isopropyl and methyl groups are axial. PQ-18. Which is/are optically inactive? H CH3 H PQ-16. Which value is closest to the internal C-C-C bond angle in cyclohexane? (A) 90⁰ (B) 100° (C) 110⁰ OH к он CH3 (C) CH3 I (B) II only H. (C) HO 50 H3C PQ-15. What factor is responsible for a greater heat of combustion per CH₂ for cyclopropane than the heat of combustion per CH₂ for cyclohexane. (A) Cyclohexane has a different hydrogen-to-carbon atom ratio than cyclopropane. (B) Cyclohexane has greater ring strain than cyclopropane. (C) Cyclopropane is a strained ring relative to cyclohexane. (D) Cyclohexane has more carbon atoms than cyclopropane. (C) CH3 HO CH3 PQ-17. Which molecules would have the highest heat of combustion, or release most energy when burned to produce CO₂ and H₂O? OH OH H CH3 CI CH3 II (C) III only CH3 (D) III H-OH H H - OH CH 3 III H (D) CH3 H3C (D) CH₂CH3 H3C (D) 120° CH 3 OH (D) II and III CI
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