The thermodynamic activity of calcium ion in sodium chloride-calcium chloride electrolytes.
Experimental data on the mean activity coefficient of CaCl(2) in NaCl-CaCl(2) mixtures at ionic strengths below 1 m have been used to prepare a table of activity coefficients for Ca(++) in solutions of physiological interest. The establishment of an empirical calcium ion activity scale is discussed, and a number of possible assumptions are examined. The assumption gamma++ = (gamma+/-)(2) is suggested as being the simplest with a theoretical basis.
D002118:Calcium; D002122:Calcium Chloride; D004573:Electrolytes; D009994:Osmolar Concentration; D012965:Sodium Chloride; D013816:Thermodynamics
D004573:Electrolytes; D012965:Sodium Chloride; D002122:Calcium Chloride; D002118:Calcium