Partial molar volumes of organic solutes in water. I.O-,m-, andp-cresol at temperatures 298 K to 573 K

Partial molar volumes of organic solutes in water. IV. Benzoic and hydroxybenzoic acids at temperatures fromT= 298 K toT= 498 K and pressures up to 30 MPa

“…The uncertainties in V o m,2 given in table 2 include the random error estimates that originate from the scatter associated with equation (1), as well as systematic errors estimated from the uncertainties of temperature, pressure, and calibration constant. Compared to our previous measurements (1)(2)(3)(4) the experimental uncertainties are much larger due to narrow molality intervals of the measurements caused by low solubility of the acids in water at ambient conditions, particularly for 2-hydroxybenzoic acid. Unusually large standard deviations of the slope σ (b) {equation (1), table 2} are also the consequence of narrow molality ranges.…”

“…The data for hydroxybenzene (phenol), (1) methyl-hydroxybenzenes (cresols), (2) dihydroxybenzenes, (3) and aminobenzene (aniline) (4) have been already published. This paper presents new data for benzoic acid and its hydroxyderivatives, i.e.…”

Volumes of aqueous alcohols, ethers, and ketones toT= 523 K andp= 28 MPa

“…In addition, incorporation of the data presented in this study, along with those previously reported, (15,(20)(21)(22)(23)(24)(25)(26)(27)(28)(29) into already existing chemical and geochemical models allows calculation of the volumetric properties for these and other compounds to high temperatures. Further improvements also are being made to these types of estimation methods based on these data (32) and will result in more accurate predictions of the properties of complex aqueous systems at elevated temperatures and pressures.…”

Partial molar volumes of organic solutes in water. III. Aniline at temperaturesT= 298 K toT= 573 K and pressures up to 30 MPa

“…The data for hydroxybenzene (phenol), (1) methylhydroxybenzenes (cresols), (2) and dihydroxybenzenes (3) have been already published. This paper presents new data for aniline obtained using both a recently designed high-temperature high-pressure (HTHP) vibrating-tube densimeter (1) and a commercial vibrating-tube cell DMA 602HT.…”