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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 15, Number 2
JKCSEZ 15(2)
April 20, 1971

Title	Partial molal volumes of tetraalkylammonium chlorides in isopropanol-water mixtures 2-프로판올-물 혼합용매에서의 Tetraalkylammonium Chlorides의 분몰랄 부피
Author	Byung-Rin Cho 조병린
Keywords
Abstract	The apparent molal volumes Φv of a series of homologous tetraalkylammonium chlorides, Me4NCl, Et4NCl, Pr4NCl, and Bu4NCl, in a series of isopropanol-water mixtures have been determined at 30℃ from precision density measurements using pycnometers. The values of Φv extrapolated to infinite dilution give partial molal volumes V°s which are almost additive for successive homologues and enable one to determine the absolute individual ionic partial molal volumes. The experimental results are discussed in terrns of the varying size and surface charge of the ions and the structure of the binary solvent mixtures. The results indicate that at 0.1 mole fraction isopropanol the maximum structuredness of water causes a minimum in the tetraalkylammonium-cation partial molal volumes, while at 0.2 mole fraction the solvent structure is such that the free volumes is a minimum and the electrostrictive effect of chloride ion is a maximum.
Page	95 - 105
Full Text	PDF

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