The Solubility of Cucurbit[5]uril in Pure Water and Hydrochloric Acid at Different Temperature and Some Relative Thermodynamic Functions

DOI

10.2991/icimm-15.2015.50How to use a DOI?

Keywords

solubility; cucurbit[5]uril; enthalpy; entropy; Gibbs free energy

Abstract

The solubility of cucurbit[5]uril in pure water and different concentration of hydrochloric acid aqueous solution( HCl:H2O = 10:110, 15:105, 20:100, 40:80) were investigated between 283.15 K and 323.15 K at atmospheric pressure by using the UV vis spectrophotometer method. The solubility of CB[5] increased with the increasing of temperature, and a new phenomenon was found that the solubility of CB[5] increased with increasing acid concentration below 298 K and the solubility of CB[5] reduced with increasing acid concentration above 305 K. Thermodynamic functions (entropy and enthalpy of dissolution) for the CB[5] solutions were determined with the Van’t Hoff equation, and the Gibbs free energy was also calculated.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Hongyan Lu
AU  - Jiarong Li
PY  - 2015/07
DA  - 2015/07
TI  - The Solubility of Cucurbit[5]uril in Pure Water and Hydrochloric Acid at Different Temperature and Some Relative Thermodynamic Functions
BT  - Proceedings of the 5th International Conference on Information Engineering for Mechanics and Materials
PB  - Atlantis Press
SP  - 261
EP  - 266
SN  - 2352-5401
UR  - https://doi.org/10.2991/icimm-15.2015.50
DO  - 10.2991/icimm-15.2015.50
ID  - Lu2015/07
ER  -