Logo image
Back
Heat Capacities of Aqueous Solutions of Lithium Sulfate, Lithium Perchlorate, and Lithium Trifluoromethanesulfonate at 298.15 K
Journal article   Peer reviewed

Heat Capacities of Aqueous Solutions of Lithium Sulfate, Lithium Perchlorate, and Lithium Trifluoromethanesulfonate at 298.15 K

B. Hu, L. Hnědkovský and G. Hefter
Journal of Chemical & Engineering Data, Vol.61(6), pp.2149-2154
2016
DOI: https://doi.org/10.1021/acs.jced.6b00103
url
Link to Published Version *Subscription may be requiredView

Abstract

Isobaric heat capacities of aqueous solutions of Li2SO4, LiClO4, and LiCF3SO3 have been measured at 298.15 K and 0.1 MPa up to high concentrations using a Picker flow calorimeter. Apparent molar isobaric heat capacities, Cp,ϕ, derived from these data were fitted within the limits of experimental precision with an extended Redlich–Rosenfeld–Meyer type of equation, which was also used to estimate the standard state (infinite dilution) quantities, Cp,ϕo, for each salt. The latter values were combined with appropriate literature data to produce a robust estimate of Cp,ϕo (Li+(aq)) = −3 ± 2 J·K–1·mol–1. Where comparison was possible, Cp,ϕ(LinX) values were closely parallel to those of the corresponding acids over the whole concentration range, even when the shapes of the curves were highly unusual. In contrast, Cp,ϕ(NanX) values always exhibited a crossover with the lithium salt data at a concentration of about 1 mol·kg–1, which appears to reflect differences in the hydration of the two cations.

Details

Metrics

90 Record Views
6 Times Cited - Web of Science

InCites Highlights

These are selected metrics from InCites Benchmarking & Analytics tool, related to this output

Collaboration types
Domestic collaboration
International collaboration
Citation topics
2 Chemistry
2.89 Ionic, Molecular & Complex Liquids
2.89.462 Excess Molar Volumes
Web Of Science research areas
Chemistry, Multidisciplinary
Engineering, Chemical
Thermodynamics
ESI research areas
Chemistry
Logo image