摘要
利用作者在前文中提出的由二元相图数据计算活度的计算机程序 CABPD,计算得到此体系液相及固相的热力学性质。液相呈较小的负偏差,而固相呈较大的正偏差。液同相的超额全摩尔自由能可以表示为:~EGm(L)=-1808X_(NaCl)X_(KCl) (J/mol)~EGm(S)=X_(NaCl)X_(KCl)(13508—4783X_(KCl)) (J/mol)计算值与质谱法测定结果吻合良好。
Although the thermodynamic properties of the liquid phase and solid phase for NaCl-KCl system have been measured many times by different invest- igators,those experimental results reported in literatures are in considera- bly poor agreement.However,the experimental phase diagrams of this system reported in literatures are in very good agreement.Therefore,the activities of components of NaCl-KCl system have been Calculated by using computer program CABPD (Calculating Activities from Binary Phase Diagram),which was presented by the authors in the foregoing paper.The activities of KCl and NaCl in the solid solution show greatly positive deviations from Raoult's law,while the liquid solution gave slightly negative values,the calculated excess Gibbs free energies in liquid and solid solutions can be expressed as: ~EG_m(L)=-1808X_(NaCl)X_(KCl)(J/mol) ~EG_m(S)=X_(NaCl)X_(KCl)(13508-4783X_(KCl))(J/mol) The agreement between the calculated and experimental results is good.
出处
《化工冶金》
CSCD
北大核心
1989年第1期24-30,共7页
