【摘要】 在HCl—In₂（SO₄）₃—H₂O体系中,恒定溶液总离子强度和In₂（SO₄）₃在溶液中的离子强度分数,应用经典的电动势方法测定无液体接界电池（A）在278.15～318.15K温度范围内的电动势: Pt,H₂（101.325kPa）lHCl（m_A）,In₂（SO₄）₃（m_B）,H₂OlAgCl-Ag（A）根据电池（A）的电动势数据,计算了混合溶液中HCl的活度系数r_A,当指定温度和保持溶液中总离子强度恒定时,进一步讨论了HCl的活度系数与溶液中In₂（SO₄）₃的离子强度分数的关系,结果表明,在溶液总离子强度较低时,HCl的活度系数服从Harned规则。更多还原

【Abstract】 The apparent thermodynamic properties of the system HCl-In2(SO4)3-H2O were studied by emf measurement in the cells without liquid junction:Pt,H2(101.325kPa)|HCl(mA),In2(SO4)3(mB),H2OlAgCl-Ag (A)at the constant total ionic strength I=0.2,0.4,0.6,0.8,1.0,1.5 mol kg-1 and yB=0.0000,0.1000,0.2000, 0.3000,0.5000,0.7000 at different temperatures from 278.15 to 318.15 K. The activity coefficients of HCl rA in the solution have been determined from cell (A) . The results show that the activity coefficients of HCl still obey Harned Rule at a low of total ionic strength.更多还原