Journal of Solution Chemistry

, Volume 39, Issue 6, pp 857–863 | Cite as

The Estimation of Standard Molar Enthalpies of Solution for VOSO4nH2O(s) in Water and in Aqueous H2SO4

  • Ye Qin
  • Wei-Feng Xue
  • Jian-Guo Liu
  • Wei-Guo Xu
  • Chuan-Wei Yan
  • Jia-Zhen Yang


The molar enthalpies of solution of VOSO4⋅3.52H2O(s) at various molalities in water and in aqueous sulfuric acid (0.1 mol⋅kg−1), Δsol H m, were measured by a solution-reaction isoperibol calorimeter at 298.15±0.01 K. An improved Archer’s method to estimate the standard molar enthalpy of solution, \(\Delta_{\mathrm{sol}}H^{0}_{\mathrm{m}}\), was put forward. In terms of the improved method, the values of \(\Delta_{\mathrm{sol}}H^{0}_{\mathrm{m}}=-24.12\pm 0.03~\mbox{kJ}{\cdot}\mbox{mol}^{-1}\) of VOSO4⋅3.52H2O(s) in water and \(\Delta_{\mathrm{sol}}H^{0}_{\mathrm{m}}=-15.38\pm 0.06~\mbox{kJ}{\cdot}\mbox{mol}^{-1}\) in aqueous sulfuric acid were obtained, respectively. The data indicates that the energy state of VOSO4 in aqueous H2SO4 is higher than that in pure water.


Vanadium redox flow battery Enthalpies of solution Vanadyl sulfate Sulfuric acid 


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Ye Qin
    • 1
  • Wei-Feng Xue
    • 2
  • Jian-Guo Liu
    • 1
  • Wei-Guo Xu
    • 2
  • Chuan-Wei Yan
    • 1
  • Jia-Zhen Yang
    • 2
  1. 1.State Key Laboratory for Corrosion and ProtectionInstitute of Metal Research, Chinese Academy of SciencesShenyangChina
  2. 2.College of ChemistryLiaoning UniversityShenyangChina

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