磷酸水溶液的相互作用参数值的求取  

The Interaction Parameters of Aqueous Solution of Phosphoric Acid

作　　者：江成发[1] 郭志琴[1] 苏裕光[1] 

机构地区：[1]成都科技大学化学工程系

出　　处：《成都科技大学学报》1992年第1期25-30,共6页

摘　　要：本文用 Pitzer 电解质溶液理沦关联了25℃时磷酸水溶液在0.1～19.0mol/1000gH_2O浓度范围内的渗透系数,得出了适用于较高浓度磷酸水溶液的相互作用参数值。On the basis of Pitzer’s electrolyte solution theory,we have studied the interaction parameters of the aqueous solution of phosphoric acid at 25℃ by means of the correlation of osmostic coefficients in the range of 0.10 to 19.00 mol/1000gH_2O. Some legitimate assumptions have been made in this paper,which were based on the analysis of the particularities for the solution.From Pitzer’s theory,the formular for the osmostic coefficient of aqueous solution of phosphoric acid is expressed by Eq.5.The expressions of the activity coeffi- cient for cation M,anion X,and molecular A have been obtained too. The interaction parameters have been regarded as adjustable whose values have been found by fit of the exprimental osmostic coefficients reported by Platford. With the interaction parameters,we have calculated the osmostic coeff- icients of the aqueous solution of phosphric acid in the range of 0.10 to 19.0 mol/1000gH_2O(see Table 2).The resulst show satisfactory agreement between expremental data and the calaulations.

关 键 词：磷酸 相互作用参数 电解质 

分 类 号：O646.1[理学—物理化学]