4.2 Article

Self-Diffusion and Heteroassociation in an Acetone-Chloroform Mixture at 298 K

Journal

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
Volume 92, Issue 1, Pages 75-78

Publisher

MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0036024418010090

Keywords

self-diffusion coefficient; heteroassociation constant; hydrodynamic radius

Funding

  1. Russian Foundation for Basic Research [16-33-00248-mol_a]

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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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