The two alternative chair conformations of cis-1-cyano-4-methylcyclohexane differ in their Gibbs free energy. Using the data for ΔG° for monosubstituted cyclohexanes at room temperature (25ºC): Axial → Equatorial Group ΔG° (kJ/mol) Group ΔG° (kJ/mol) C-N triple bond −0.8 NH2 −5.9 Br −2.4 CH3 −7.3 OH −3.9 1,2-gauche +3.8 calculate the absolute value of the difference in the Gibbs free energy between the alternative chair conformations.

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Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.