Partial molal volumes of organic compounds in carbon tetrachloride. IV. Ketones, alcohols, and ethers

Abstract

The partial molal volumes [Formula: see text] in carbon tetrachloride at 25 °C of 13 ketones, 18 alcohols, and 17 mono- or poly-functional ethers, all acyclic, have been determined. Results are in reasonable agreement with [Formula: see text] calculated from an equation developed previously, using previous parameters plus the following: increments (in mL mol−1) of 8.72 for carbonyl, 6.1 for hydroxyl, 4.4 for oxygen in a monofunctional ether, and 5.8 for oxygen in a polyfunctional ether; decrements δ (in mL mol−1) of −1.68 for [Formula: see text] for [Formula: see text] for [Formula: see text] for [Formula: see text], and −1.93 for [Formula: see text]. The increments for carbonyl and hydroxyl are smaller than the van der Waals volumes of these groups, and indicate some degree of complexation to carbon tetrachloride. Only a roughly linear relation is found between [Formula: see text] of alcohols in water and [Formula: see text] in carbon tetrachloride, possibly because of the intrusion of additional effects such as structure-promotion in water.