Abstract
One important compound rubidium pyruvate C3H3O3Rb(s) was synthesized and characterized by chemical analysis, elemental analysis and X–ray crystallography. X–ray single crystal structural analysis revealed that the compound is composed of one anion CH3COCOO− and one cation Rb+. An obvious feature of the crystal structure of the compound is the formation of a five-membered chelate ring, which is good for the stability of the compound. The lattice potential energy and ionic volume of the common anion were obtained from crystallographic data. The lattice potential energy $$ U_\text{POT}^{{}} $$ [C3H3O3Rb(s)] is 570.0 kJ·mol−1 and the volume of the anion CH3COCOO− is 0.1139 nm3. Molar enthalpies of dissolution of the compound at various molalities in the doubly distilled water were determined by use of an isoperibol solution-reaction calorimeter at 298.15 K. According to Pitzer’s model, the molar enthalpy of dissolution of C3H3O3Rb(s) at infinite dilution was derived to be 50.0 kJ·mol−1. Finally, the molar enthalpy of hydration of CH3COCOO−(g) was calculated to be −232.0 kJ·mol−1 from a thermochemical cycle.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
