Limiting Partial Molar Excess Enthalpies of Selected Organic Compounds in Water at 298.15 K

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F02%3A00006996" target="_blank" >RIV/60461373:22340/02:00006996 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Limiting Partial Molar Excess Enthalpies of Selected Organic Compounds in Water at 298.15 K

Original language description

A flow mixing microcalorimeter in conjunction with asymmetric syringe-type pumps was employed to measure enthalpies of mixing at 298.15 K for highly dilute aqueous solutions of 16 organic solvents of moderate hydrophobicity. Limiting partial molar excessenthalpies were determined by extrapolating these data to infinite dilution. Except for 2,4-pentanedione, the values of limiting partial molar excess enthalpies for all the examined mono- and bi-functional compounds containing hydroxy, keto, ether, ester, and nitrile groups are negative, indicating that the process of their dissolution in water is energetically favored at room temperature. Comparison with available literature data showed good agreement. Prediction of limiting partial molar excess enthalpies was tested for two group-contribution methods: that of Cabani et al. was found to be fairly good for monofunctional derivatives, but failed for the bifunctional derivatives, and the modified UNIFAC (Dortmund) yielded completely unsa

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2002

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Chemical and Engineering Data

ISSN

0021-9568

e-ISSN

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Volume of the periodical

47

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

954-959

UT code for WoS article

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EID of the result in the Scopus database

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