At Room Temperature Cyclohexane Exists Almost Exclusively in the Chair

question 60

Multiple Choice

At room temperature cyclohexane exists almost exclusively in the chair conformation (99.99%) . But at 800°C, 30% of the cyclohexane molecules exist in the twist-boat conformation. What is the value of the equilibrium constant for the following reaction at 800°C?
C₆H₁₂(chair) C₆H₁₂(twist-boat)

• A) 0.30
• B) 2.3
• C) 0.23
• D) 0.43
• E) 0.77

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