化学学报 ›› 1989, Vol. 47 ›› Issue (2): 171-173. 上一篇    下一篇

研究论文

电位法研究锡(II)—氯离子的配位平衡

郭炳;曹再珍;周荣光;贾春环   

  1. 中南工业大学化学系
  • 发布日期:1989-02-15

Potentiometry study of coordination equilibrium between tin(II) and chlorine ion

GUO BING;CAO ZAIZHEN;ZHOU RONGGUANG;JIA CHUNHUAN   

  • Published:1989-02-15

本文报导电位法研究锡(II)—氯离子的配位平衡, 本工作采用防止Sn(II)氧化措施, 用NaClO4 HClO4控制离子强度, 加入NaCl作配位剂, 测定浓差电池的电动势, 求出各级稳定常数, 并确定了最大配位数.

关键词: 稳定常数, 氯离子, 电动势, 锡化合物, 化学平衡, 电位测定, 锡络合物

Potentiometry was used to measure the overall stability constants of coordinate ions for the Sn(II)-Cl- system at 25?and ionic strength 3. The overall stability constants for stepwise reactions are log b1 = 1.202, log b2 = 1.288, log B3 = 2.369, log b4 = 1.968. The max. coordination no. was determine to be 4. The equilibrium concentration profile of coordinate ions for this system is also illustrated.

Key words: STABILITY CONSTANT, CHLORINE ION, ELECTROMOTIVE FORCES, TIN COMPOUND, CHEMICAL EQUILIBRIUM, POTENTIOMETRIC DETERMINATION, TIN COMPLEX

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