Abstract
The enthalpies of reaction of cesium fluoroxysulfate, CsSO/sub 4/F, and cesium perocydisulfate, Cs/sub 2/S/sub 2/O/sub 8/, with HI(aq) have been measured by solution calorimetry, and the following standard enthalpies of formation at 298.15 K have been derived: ..delta..H/sub f//sup 0/(CsSO/sub 4/F(c)) = -1004.9 +- 1.6 kJ mol/sup -1/ and ..delta..H/sub f//sup 0/(Cs/sub 2/S/sub 2/O/sub 8/(c)) = -1936.7 +- 2.8 lJ mol/sup -1/. The enthalpy of solution of Cs/sub 2/S/sub 2/O/sub 8/(c) in 5345 mol of water at 298.15 K has been determined to be 79.5 +- 1.9 kJ mol/sup -1/. The Gibbs energy of solution of CsSO/sub 4/F at 298.15 K has been determined from solubility measurements to be ..delta..G/sub soln//sup 0/ (CsSO/sub 4/F) = 6.15 +- 0.40 kJ mol/sup -1/. The fluoroxysulfate results have been used in conjunction with an estimated entropy for solid CsSO/sub 4/F to calculate a standard potential of 2.52 +- 0.05 V at 298.15 K for the half-reaction SO/sub 4/F/sup -/(aq) + 2H/sup +/(aq) + 2e/sup -/ ..-->.. HSO/sup 4 -/(aq) + HF(aq). 8 tables.
Sign-in/Register to access full text options 
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.
