Abstract
Values of the enthalpy, entropy and free energy of solution and hydration are reported for cyclopentanol, cyclohexanol, cycloheptanol, butan-2-ol, pentan-3-ol, hexan-3-ol and heptan-4-ol. Aqueous solutions of cyclic alcohols are thermodynamically more stable, mainly because of entropy effects, than those of the corresponding open chain secondary alcohols. ΔH°h varies linearly with ΔS°h, but the values for cyclic and secondary aliphatic alcohols lie on different straight lines.Parameters in the equation ΔH°h=α+β(ΔS°h+ 45) were calculated for all classes of monofunctional compounds so far investigated. The dependence of α on the type of functional group and on the type of hydrocarbon chain, open or cyclic, in which the latter is inserted is discussed.
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Schedule a callMore From: Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
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