International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2569

Full Length Research Paper

The role of dielectric constant in sodium chloride solution chemistry: Magnitude of super saturation

Mutasim I. Khalil* and Saud I. Al-Resayes      
Department of Chemistry, Faculty of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia.  
Email: [email protected]

  •  Accepted: 04 January 2012
  •  Published: 23 January 2012

Abstract

The effect of ethanol addition to aqueous semi saturated NaCl solutions on the super saturation was studied. The amount of precipitated salt was found to increase as the percent of added ethanol increased. The rates of formation of precipitate were calculated and found to increase with decrease of the weighted average of the solvents mixture dielectric constant, e, but levels out at e ≈ 50. The solubility of salt was then connected with the dielectric constant and a zero solubility was observed at e = 35. A magnitude of super saturation was defined for the measurement of solubility.

 

Key words: Dielectric constant, precipitate, activation energy, magnitude of super saturation.

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