高等学校化学学报

高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (6): 879.

• 研究简报 • 上一篇    下一篇

Mn(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)扁桃酸络合物热力学参数的pH电位法测定

蒋莲芬, 孙令仪   

  1. 昆明工学院基础部
  • 收稿日期:1983-08-31 出版日期:1984-12-24 发布日期:1984-12-24

pH-Electrometric Determination of Thermodynamical Parameters of Mn(Ⅱ),Co(Ⅱ),Ni(Ⅱ) Mandelate Complexes

Jiang Lianfen, Sun Lingyi   

  1. Kunming Engineering Institute, Kunming
  • Received:1983-08-31 Online:1984-12-24 Published:1984-12-24

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摘要： 本文采用pH电位法测定不同温度下的稳定常数,并由此求热力学参数.

Abstract: The stability constants of 1:1(Me2+ : mandelic acid) complex have been determined by pHmetrically at an ionic strength 0. 1 M KNO3 and at 10℃, 15℃,20℃,25℃, 30℃. The constants are in the order of NiL+ > CoL+>MnL+ at each temperature. The free enthalpy changes are NiL+< CoL+<MnL+,and the enthalpy change and entropy change are calculated graphically,

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