Kinetics and Mechanism for [Ni(CN)$_4]^{2-}$ Formation from [Ni(H$_2O)_6]^{2+}$ and [CN]$^-$ in Gelatin Solution

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