Activity coefficients of DL-valine in aqueous solutions of KCl at 25�C. Measurement with ion selective electrodes and modelling

1996 ◽  
Vol 25 (9) ◽  
pp. 865-875 ◽  
Author(s):  
Mohammad K. Khoshkbarchi ◽  
Juan H. Vera
Keyword(s):  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Ion Selective Electrodes

scholarly journals New Data on Activity Coefficients of Potassium, Nitrate, and Chloride Ions in Aqueous Solutions of KNO3 and KCl by Ion Selective Electrodes

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Debasmita Dash ◽  
Shekhar Kumar ◽  
C. Mallika ◽  
U. Kamachi Mudali
Keyword(s):  
Activity Coefficient ◽  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Reference Electrode ◽  
Potassium Nitrate ◽  
Chloride Ions ◽  
Ion Selective Electrodes ◽  
Ion Activity ◽  
Double Junction ◽  
Single Ion Activity

Ion selective electrodes (ISEs) are used to measure the single-ion activity coefficients in aqueous solutions of KNO3 and KCl at 298.15 K against a double-junction reference electrode. The EMF responses of ISEs up to 0.01 m are plotted to obtain the slope and intercept values. The obtained slopes and intercepts are used in Nernst equation for higher concentrated solutions for calculation of individual ion activity coefficient. The mean ionic activity coefficients are estimated from single ion activity coefficient, and the obtained results are compared with the literature values.

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