Apparent molar volumes of La(CF{sub 3}SO{sub 3}){sub 3}(aq) and Gd(CF{sub 3}SO{sub 3}){sub 3}(aq) at 278 K, 298 K, and 318 K at pressures to 30.0 MPa
Journal Article
·
· Journal of Chemical and Engineering Data
- Memorial Univ. of Newfoundland, St. John`s, Newfoundland (Canada). Dept. of Chemistry
- Oak Ridge National Lab., TN (United States). Chemical and Analytical Sciences Div.
Densities of La(CF{sub 3}SO{sub 3}){sub 3}(aq) and Gd(CF{sub 3}SO{sub 3}){sub 3}(aq) have been measured at 278 K, 298 K, and 318 K at pressures of 0.1 MPa, 7.0 MPa, and 30.0 MPa using vibrating-tube densimeters. Apparent molar volumes obtained from the density data have been fitted to the Pitzer equation. The standard partial molar volumes V{sub {phi}}{sup {infinity}} and the ion-interaction parameters {beta}{sup (0)V} and {beta}{sup (1)V} have been determined through least-squares fitting to the experimental results. The standard partial molar volume of the trifluoromethanesulfonate anion V{sub {phi}}{sup {infinity}}(CF{sub 3}SO{sub 3}{sup {minus}},aq) was calculated at 298 K and 0.1 MPa from the partial molar volumes of the gadolinium and lanthanum salts and the available values for the standard partial molar volumes of the cations. Excellent agreement is obtained for V{sub {phi}}{sup {infinity}}(CF{sub 3}SO{sub 3}{sup {minus}},aq) calculated from the data for the two salts.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 378022
- Journal Information:
- Journal of Chemical and Engineering Data, Journal Name: Journal of Chemical and Engineering Data Journal Issue: 5 Vol. 41; ISSN JCEAAX; ISSN 0021-9568
- Country of Publication:
- United States
- Language:
- English
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