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

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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, este r, 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 unsatisfactory resul 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, este r, 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 unsatisfactory resul (en)
Title	Limiting Partial Molar Excess Enthalpies of Selected Organic Compounds in Water at 298.15 K Limiting Partial Molar Excess Enthalpies of Selected Organic Compounds in Water at 298.15 K (en)
skos:prefLabel	Limiting Partial Molar Excess Enthalpies of Selected Organic Compounds in Water at 298.15 K Limiting Partial Molar Excess Enthalpies of Selected Organic Compounds in Water at 298.15 K (en)
skos:notation	RIV/60461373:22340/02:00006996!RIV/2004/MSM/223404/N
http://linked.open.../vavai/riv/strany	954-959
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM 223400008)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Hovorka, Štěpán Dohnal, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Fakulta chemicko-inženýrská
http://linked.open...dnocenehoVysledku	651878
http://linked.open...ai/riv/idVysledku	RIV/60461373:22340/02:00006996
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Infinite dilution; Excess entalpy; Organic solvents; Water; (en)
http://linked.open.../riv/klicoveSlovo	Infinite dilution Water Organic solvents Excess entalpy
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[B033F5995D5F]
http://linked.open...i/riv/nazevZdroje	Journal of Chemical and Engineering Data
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...UplatneniVysledku	2002
http://linked.open...v/svazekPeriodika	47
http://linked.open...iv/tvurceVysledku	Dohnal, Vladimír Hovorka, Štěpán Roux, Alain H. Roux-Desgranges, Geneviéve
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20223400008
issn	0021-9568
number of pages	6 (xsd:int)
http://localhost/t...ganizacniJednotka	22340

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