Thermodynamic studies of fluoroalcohols. Part 2.—Enthalpies and heat capacities of solution of liquid fluoroalcohols in water

Abstract

Standard enthalpies and heat capacities of solution of five liquid fluoroalcohols in water at infinite dilution and at four temperatures have been measured calorimetrically. The results are compared with the corresponding data for hydrocarbon alcohols and are considered in terms of the intermolecular forces and structure which exist in the liquid alcohols and the solute-solvent interactions between the alcohols and water in aqueous solution. It is concluded that CF₂ and CF₃ groups impose on adjacent water molecules an ordered structure which differs from that which exists around hydrocarbon groups in an aqueous environment.