Journal of Solution Chemistry

, Volume 10, Issue 9, pp 621–630 | Cite as

Partial molar volumes of sodium chloride solutions at 200 bar, and temperatures from 175 to 350°C

  • D. F. Grant-Taylor


High precision densities of sodium chloride solutions at a constant pressure of 200 bar and temperatures between 175°C and 350°C have been measured by a mercury displacement technique. The densities have been converted to apparent molar volumes. The apparent molar volumes decrease with increasing temperature and decreasing concentration whereas the concentration effect increases with temperature. Standard partial molar volumes range from 8.0 cm3-mol−1 at 175°C to −600 cm3-mol−1 at 350°C. The results indicate the applicability of the unextended Debye-Hückel limiting law up to concentrations of 0.02 mol-kg−1.

Key words

NaCl solutions apparent molar volumes partial molar volumes densities high temperature high pressure 


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Copyright information

© Plenum Publishing Corporation 1981

Authors and Affiliations

  • D. F. Grant-Taylor
    • 1
  1. 1.Chemistry DivisionDepartment of Scientific and Industrial ResearchPetoneNew Zealand

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