From the data in Figure and Table, estimate the percentages of molecules that have their substituents in an axial orientation for the following compounds:

(a) Isopropylcyclohexane

(b) Fluorocyclohexane

(c) Cyclohexane carbonitrile,C6H11CN

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Energy difference (kcal/mol) 2 100 More stable isomer 80 60 40 20 Less stable isomer 10 15 Energy difference (kJ/mol) Steric Strain in Monosubstituted Cyclohexanes Н 1,3-Diaxial strain (kcal/mol) (kJ/mol) 0.5 0.12 CI, Br 0.25 1.0 он 0.5 2.1 CHз 3.8 0.9 CH-CHз 4.0 0.95 CH(CH3)2 4.6 1.1 C(CH3)3 11.4 2.7 C6H5 6.3 1.5 содн 2.9 0.7 Percent