H2O-D2O solvent isotope effect on excess molar volumes of 3-methylpyridine solutions

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Densities of 3-methylpyridine (3-MP) + water and 3-methylpyridine + heavy water were measured in the 3-MP mole fraction range 0.002-0.04 from 298 to 318 K. The excess molar volumes of 3-MP + D2O mixtures were found to be more negative than those of 3-MP + H2O mixtures. The partial molar volume of 3-MP at infinite dilution is smaller in D2O than in H 2O which suggests that 3-MP causes a structure-breaking effect in water which is more pronounced in D2O. It was found that the volume change with concentration in dilute solutions of 3-MP in water and heavy water can be adequately described by the pair-wise interaction of the solute molecules. The molal volume second-virial coefficient, V xx , is positive indicating that the water molecules are less structured in the cospheres of the solute pairs than in the bulk solvent. The temperature dependence of V xx displays a maximum at around 308 K in the case of D2O solutions, whereas V xx increases almost linearly with temperature in H2O solutions.

Original languageEnglish
Pages (from-to)991-1005
Number of pages15
JournalJournal of Solution Chemistry
Volume35
Issue number7
DOIs
Publication statusPublished - Jul 2006

Fingerprint

Isotopes
Density (specific gravity)
isotope effect
heavy water
water
Deuterium Oxide
solutes
Water
virial coefficients
dilution
molecules
Molecules
Temperature
3-methylpyridine
temperature dependence
causes
Dilution
interactions
temperature

Keywords

  • 3-Methylpyridine
  • Binary mixtures
  • Density
  • Excess volume
  • Heavy water
  • Isotope effect

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

H2O-D2O solvent isotope effect on excess molar volumes of 3-methylpyridine solutions. / Jancsó, G.

In: Journal of Solution Chemistry, Vol. 35, No. 7, 07.2006, p. 991-1005.

Research output: Contribution to journalArticle

@article{02cf3cdee4e44f1593cdbf5f409e11d9,
title = "H2O-D2O solvent isotope effect on excess molar volumes of 3-methylpyridine solutions",
abstract = "Densities of 3-methylpyridine (3-MP) + water and 3-methylpyridine + heavy water were measured in the 3-MP mole fraction range 0.002-0.04 from 298 to 318 K. The excess molar volumes of 3-MP + D2O mixtures were found to be more negative than those of 3-MP + H2O mixtures. The partial molar volume of 3-MP at infinite dilution is smaller in D2O than in H 2O which suggests that 3-MP causes a structure-breaking effect in water which is more pronounced in D2O. It was found that the volume change with concentration in dilute solutions of 3-MP in water and heavy water can be adequately described by the pair-wise interaction of the solute molecules. The molal volume second-virial coefficient, V xx , is positive indicating that the water molecules are less structured in the cospheres of the solute pairs than in the bulk solvent. The temperature dependence of V xx displays a maximum at around 308 K in the case of D2O solutions, whereas V xx increases almost linearly with temperature in H2O solutions.",
keywords = "3-Methylpyridine, Binary mixtures, Density, Excess volume, Heavy water, Isotope effect",
author = "G. Jancs{\'o}",
year = "2006",
month = "7",
doi = "10.1007/s10953-006-9042-0",
language = "English",
volume = "35",
pages = "991--1005",
journal = "Journal of Solution Chemistry",
issn = "0095-9782",
publisher = "Springer New York",
number = "7",

}

TY - JOUR

T1 - H2O-D2O solvent isotope effect on excess molar volumes of 3-methylpyridine solutions

AU - Jancsó, G.

PY - 2006/7

Y1 - 2006/7

N2 - Densities of 3-methylpyridine (3-MP) + water and 3-methylpyridine + heavy water were measured in the 3-MP mole fraction range 0.002-0.04 from 298 to 318 K. The excess molar volumes of 3-MP + D2O mixtures were found to be more negative than those of 3-MP + H2O mixtures. The partial molar volume of 3-MP at infinite dilution is smaller in D2O than in H 2O which suggests that 3-MP causes a structure-breaking effect in water which is more pronounced in D2O. It was found that the volume change with concentration in dilute solutions of 3-MP in water and heavy water can be adequately described by the pair-wise interaction of the solute molecules. The molal volume second-virial coefficient, V xx , is positive indicating that the water molecules are less structured in the cospheres of the solute pairs than in the bulk solvent. The temperature dependence of V xx displays a maximum at around 308 K in the case of D2O solutions, whereas V xx increases almost linearly with temperature in H2O solutions.

AB - Densities of 3-methylpyridine (3-MP) + water and 3-methylpyridine + heavy water were measured in the 3-MP mole fraction range 0.002-0.04 from 298 to 318 K. The excess molar volumes of 3-MP + D2O mixtures were found to be more negative than those of 3-MP + H2O mixtures. The partial molar volume of 3-MP at infinite dilution is smaller in D2O than in H 2O which suggests that 3-MP causes a structure-breaking effect in water which is more pronounced in D2O. It was found that the volume change with concentration in dilute solutions of 3-MP in water and heavy water can be adequately described by the pair-wise interaction of the solute molecules. The molal volume second-virial coefficient, V xx , is positive indicating that the water molecules are less structured in the cospheres of the solute pairs than in the bulk solvent. The temperature dependence of V xx displays a maximum at around 308 K in the case of D2O solutions, whereas V xx increases almost linearly with temperature in H2O solutions.

KW - 3-Methylpyridine

KW - Binary mixtures

KW - Density

KW - Excess volume

KW - Heavy water

KW - Isotope effect

UR - http://www.scopus.com/inward/record.url?scp=33746859773&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33746859773&partnerID=8YFLogxK

U2 - 10.1007/s10953-006-9042-0

DO - 10.1007/s10953-006-9042-0

M3 - Article

AN - SCOPUS:33746859773

VL - 35

SP - 991

EP - 1005

JO - Journal of Solution Chemistry

JF - Journal of Solution Chemistry

SN - 0095-9782

IS - 7

ER -