期刊
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
卷 92, 期 1, 页码 75-78出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0036024418010090
关键词
self-diffusion coefficient; heteroassociation constant; hydrodynamic radius
资金
- Russian Foundation for Basic Research [16-33-00248-mol_a]
The self-diffusion coefficients of acetone and chloroform in a binary acetone-chloroform mixture at 298 K are determined via pulsed field gradient NMR spectroscopy. It is estimated that the hydrodynamic radii of the mixture's components, calculated using the Stokes-Einstein equation, grow as the concentrations of the components fall. It is shown that such behavior of hydrodynamic radii is due to acetone-chloroform heteroassociation. The hydrodynamic radii of monomers and heteroassociates in a 1: 1 ratio are determined along with the constant of heteroassociation, using the proposed model of an associated solution.
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