Chemical Equilibria of Nickel Chloride in HCl Solution at 25¡É

Bulletin of the Korean chemical society

Sang Ho Nam¹  Man Seung Lee¹ 

关键词: NiCl2;    HCl;    Ionic equilibria;    pH;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Chemical equilbria of nickel chloride in HCl solution at 25 oC were analyzed by considering chemical equilibria, mass and charge balance equations. The activity coefficients of solutes were calculated by using Bromley equation. The necessary thermodynamic properties, such as the equilibrium constant for the formation of NiCl+ at zero ionic strength and interaction parameter, were evaluated by applying Bromley equation to the stability constant data reported in the literature. It was found that most nickel exists as Ni2+ in HCl solution up to 5 molality HCl. The pH values of NiCl2-HCl-H2O system at 25 oC calculated in this study agreed well with the pH values measured by employing pH meter.

【 授权许可】

Unknown