物理化学学报 >> 1996, Vol. 12 >> Issue (01): 75-80.doi: 10.3866/PKU.WHXB19960117

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NaCl(或KCl)-CH3OH-H2O体系的摩尔电导

张锁江,韩世钧,金银东   

  1. 浙江大学化学系，杭州 310027
  • 收稿日期:1994-12-05 修回日期:1995-06-13 发布日期:1996-01-15
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Molar Conductances of NaCl and KCl in Aqueous Methanol Mixtures at 298.15K

Zhang Suo-Jiang,Han Shi-Jun,Jin Yin-Dong   

  1. Chemistry Department,Zhejiang University,Hangzhou 310027
  • Received:1994-12-05 Revised:1995-06-13 Published:1996-01-15
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关键词: 摩尔电导, 氯化钠, 氯化钾, 甲醇-水体系

Abstract:

Molar conductances of NaCl and KCl in 0~100%(ω/ω) CH3OH-H2O have been measured by using the alternating conductance bridge method resembling that of Shedlovsky. The results show that the limiting molar conductances (Λ0) of both NaCl and KCl have the lowest curve points around 55%(ω/ω) CH3OH and the limiting molar conductances (Λ0) of KCl are larger than that of NaCl in 0~100%(ω/ω) CH3OH-H2O mixtures, which can be accounted for in terms of the micro-structure and ionic solvated situation of NaCl and KCl aqueous methanol solution. Furthermore, experimental limiting molar conductances (Λ0) for KCl-CH3OH-H2O system in this work are critically compared with that of Amis, which shows that measured results in this work are more reliable.

Key words: Molar conductance, Sodium chloride, Potassium chloride, Methanol-water mixture