20.500.12556/DKUM-53179 Volumetric properties of ethanol-water mixtures under high pressure Densities of ethanol-water mixtures have been measured using a vibrating tube densimeter and a different arrangement high-pressure experimental set-up. Measurements were carried out at 298,15 K in a pressure range from 0.1 MPa to 5MPa. Partial molar volumes, excess molar volumes and coefficients of isothermal compressibility were calculated. The molar volumes of alcohol and its partial molar volumes in mixtures with water are found to decrease monotonously with increasing pressure. Excess molar volumes are negative at all pressures. The numerical P-V relations at each composition are correlated satisfactorily as a function of pressure by the Hayward equation. Gostote mešanic etanola z vodo smo izmerili z gostometrom, ki je bil prirejen za visokotlačne poskuse. Meritve so potekale pri 298,15 K v območju tlakov od 0,1 MPa do 5 MPa. Iz izmerjenih gostot smo izračunali parcialne molske prostornine, presežene molske prostornine in koeficiente izometrične stisljivosti. Molske prostornine etanola in njegove parcialne molske prostornine v mešanicah z vodo se monotono zmanjšujejo s povečanjem tlaka. Pri vseh tlakih so presežene molske prostornine negativne. Numerične P-V zveze v odvisnosti od tlaka so za vsako sestavo raztopine podane s Hayworthovo enačbo. chemistry high-pressure vibrating tube densimeter excess molar values isothermal compressibility kemija gostotometer visokotlačni poskusi presežne molske vrednosti izotermična stisljivost true false true Angleški jezik Slovenski jezik Znanstveno delo 2015-07-10 19:36:17 2015-07-10 19:36:17 2022-06-02 03:09:21 2021-05-10 03:34:57 2001 0 0 str. 317-324 št. 3 Letn. 48 2001 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1318-0207 54 14086149 6504214 1318-0207 URN:SI:UM:DK:MGY4NXLF Acta_Chimica_Slovenica_2001_Petek,_Pecar,_Dolecek_Volumetric_properties_of_ethanol-water_mixtures_under_high_pressure.pdf Acta_Chimica_Slovenica_2001_Petek,_Pecar,_Dolecek_Volumetric_properties_of_ethanol-water_mixtures_under_high_pressure.pdf 1 9BB1ECCC5B53C09AB9A2CD48A7E94F85 6bfb84b8fb97d5ef6311534ad2a8c41c9117577cf83282e8943605cb16d2f935 954a887d-7c0e-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=116393 http://acta-arhiv.chem-soc.si/48/48-3-317.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=77739 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0