摘要
Potentiometric titration method was used to judge whether the precipitated hydroxide is a complex hydroxide or a mixture when alkali solution was added to an aqueous solution containing two kinds of metal salts(Al 3+ ?Fe 3+ ?Ni 2+ ?Zn 2+ ?Cu 2+ ). Capability of complex formation between the metal hydroxides was investigated by comparing the pH of the plateau in the titration curves with that for the solution of one metal ion. Complex hydroxide was formed for all divalent ions and trivalent ions, and the sequence of the capability was Ni 2+ >Zn 2+ >Cu 2+ .
Potentiometric titration method was used to judge whether the precipitated hydroxide is a complex hydroxide or a mixture when alkali solution was added to an aqueous solution containing two kinds of metal salts(Al 3+ ?Fe 3+ ?Ni 2+ ?Zn 2+ ?Cu 2+ ). Capability of complex formation between the metal hydroxides was investigated by comparing the pH of the plateau in the titration curves with that for the solution of one metal ion. Complex hydroxide was formed for all divalent ions and trivalent ions, and the sequence of the capability was Ni 2+ >Zn 2+ >Cu 2+ .
出处
《应用化学》
CAS
CSCD
北大核心
2002年第4期398-400,共3页
Chinese Journal of Applied Chemistry
基金
江西省自然科学基金资助项目 (992 0 0 0 7)
