【摘要】 本文着重讨论了一种方法,并在此方法指导下研究了几种硝酸盐在不同浓度下对络离子 FeSCN²⁺的稳定性的影响,从而得出些不同于前人的结论。更多还原

【Abstract】 In this paper a method is discussed emphasing that under its direction we have studied the effect of several nitrates of different concentrations upon the stability of complex FeSCN²⁺,and some conclusions different from predecessors are gained. The paper has pointed out that on the right of the extended Debye- Hückel equation Y_R=log K₀+IΔb there must be a straight line and it decides that on the left of the equation, Y_L=log K-(AΔZI^1/2/1+BàI^1/2) there must be a straight line too.So the meaning of ,as an adjusted pa- rameter,is clearly defined,that is, selected has to make the distribution of points （Y,I） closing in on a straight line. In addition, 1)The stability of complex FeSCN²⁺ has been studied under the supporting of eletrolyte Ca（NO₃）₂,and =6.5 is obtained.Corresponding with it,thus log K₀=2.92（18℃）.When the value in question is compared with that from literatures （2.95,R.T.;2.94,25℃）,it is found that they are very approximate and make =6.5 get some supports. 2)If the selected suitable,the applicable range of extended Debye- Hückel equation may be rather wide,perhaps,it is limited only by solubility of supporting electrolyte. 3)There is a critical value I₀ of variable I in the equation.When the area of variation of I does not contain I₀,however is adjusted a reasonable straight line can’t be worked out.更多还原