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Activity coefficients of electrolyte and amino acid in the systems (water + potassium chloride + DL-valine) at T = 298.15 K and (water + sodium chloride + L-valine) at T = 308.15 K

Khavaninzadeh, A ; Sharif University of Technology | 2002

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  1. Type of Document: Article
  2. DOI: 10.1006/jcht.2002.0959
  3. Publisher: 2002
  4. Abstract:
  5. The activity coefficient data were reported for (water + potassium chloride + DL-valine) at T = 298.15 K and (water + sodium chloride + L-valine) at T = 308.15 K. The measurements were performed in an electrochemical cell using ion-selective electrodes. The maximum concentrations of the electrolytes and the amino acids studied were 1.0 molality and 0.4 molality, respectively. The results of the activity coefficients of DL-valine are compared with the activity coefficients of DL-valine in (water + sodium chloride + DL-valine) system obtained from the previous study. The results show that the presence of an electrolyte and the nature of its cation have a significant effect on the activity coefficient of DL-valine in aqueous electrolyte solutions. © 2002 Elsevier Science Ltd. All rights reserved
  6. Keywords:
  7. Activity coefficient ; Amino acid ; Electrolyte ; Ion-selective electrode
  8. Source: Journal of Chemical Thermodynamics ; Volume 34, Issue 8 , 2002 , Pages 1297-1309 ; 00219614 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0021961402909596