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 |
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| Institution: | 1. Department of Chemistry, Amirkabir University of Technology, Tehran, Iran;2. Department of Chemical Engineering, Sharif University of Technology, Tehran, Iran;3. Hyprotech Ltd. 300, 1110 Centre Street North, Calgary, Alberta, Canada T2E 2R2;1. Department of Physics, Persian Gulf University, Bushehr 75169, Iran;2. Department of Physics, Yasouj University, Yasouj 75914, Iran;1. Electric Power Research Institute of Guangdong Power Grid Corporation, Guangzhou, Guangdong 510080, China;2. Institute of Metal Research, Chinese Academy of Sciences, Liaoning, Shenyang 110016, China;1. Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran;2. Department of Mechatronics Engineering, Science and Research Campus, Islamic Azad University, Tehran, Iran;3. Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran;4. Institute for Biotechnology and Environmental (IBE), Sharif University of Technology, Tehran, Iran |
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| Abstract: | 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. |
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