Journal of Solution Chemistry

, Volume 25, Issue 1, pp 43–50 | Cite as

Equation of state for the NH3−H2O system

  • Zhenhao Duan
  • Nancy Møller
  • John H. Weare


An equation of state (EOS) for the NH3−H2O system has been developed. This EOS incorporates a highly accurate end-member EOS and on an empirical mixing rule. The mixing rule is based on an analogy with high order contributions to the virial expansion for mixtures. Comparison with experimental data indicates that the mixed system EOS can predict both phase equilibria and volumetric properties for this binary system with accuracy close to that of the experimental data from 50°C and 1 bar to critical temperatures and pressures.

Key Words

Equation of state chemical potential phase equilibrium density H2NH3 


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Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • Zhenhao Duan
    • 1
  • Nancy Møller
    • 1
  • John H. Weare
    • 1
  1. 1.Department of Chemistry0340 University of California, San DiegoLa Jolla

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