at high pressures

Abstract

ne) are presented and attempts are described to determine thehydrogen-bonding parts of the molar excess volume and fromthese the equilibrium constant K and the standard reactionvolume ArV° for the formation of the hydrogen bond.The pressure dependence and critical phenomena of liquid-gas,liquid-liquid, and gas-gas equilibria will be shortly reviewedand some new data will be presented. Here phase separationphenomena in binary as well as ternary systems will be consi-dered, the accent being on solutions of alkanols (e.g. metha-nol, 1-hexanol, 1-decanol, 1-dodecanol) in liquid (e.g. alka-nes) or supercritical (e.g. C02, N2, CHF3, CC1F3) solvents and