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KMID : 1059519870310050382
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Journal of the Korean Chemical Society
1987 Volume.31 No. 5 p.382 ~ p.388
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Kinetics and Mechanism for [Ni(CN)4]2- Formation from [Ni(H2O)6]2+ and [CN]- in Gelatin Solution
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Park Byung-Kak
Lee Il-Bong
Lim Joo-Sang
Lee Gil-Jun
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Abstract
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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.
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KEYWORD
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