Chemistry - STEREO ISOMERISM Question with Solution | TestHub

For cyclohexane chair–chair equilibrium, the more stable conformer has more substituents in equatorial positions. The equilibrium constant reflects the relative stability of the two conformers.

(A) Unsubstituted cyclohexane: both chairs are equivalent, but the shown relationship gives $K_{eq}<1$. (B) The two conformers do not have equal stability because the methyl groups are not equivalently distributed.

(C) The conformer with more bulky groups in equatorial positions is strongly favored, so the indicated $K_{eq}>1$ is not correct for the shown direction.

(D) The shown conformer is less stable, so $K_{eq}<1$.

Correct options = A, B, D