ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 31, Number 5
JKCSEZ 31(5)
October 20, 1987 

Kinetics studies on the reaction system of [Ni(H2O)6]2+ + 4CN- ↔ [Ni(CN)4]2- have been carried out in 0.005% gelatin solution at 25℃ by means of conductometry. The fifth-order kinetics were observed in the formation rate of [Ni(CN)4]2- from the reaction of [Ni(H2O)6]2+ and [CN]-. The reaction was found first order in [Ni(H2O)6]2+ and fourth order in [CN]-. ΔH≠ and ΔS≠ were obtained the values of 5.15kcal/mole and -35.07 e.u., respectively. We have proposed the possible mechanism from the data obtained.