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Citation: Lin Hua-Kuan, Gu Zong-Xin, Zhou Zhi-Fen, Chen Rong-Ti. Calorimetric Determination of the Heat of Formation of Competitive Ternary Complex Compounds[J]. Acta Physico-Chimica Sinica, ;1991, 7(04): 467-470. doi: 10.3866/PKU.WHXB19910417 shu

Calorimetric Determination of the Heat of Formation of Competitive Ternary Complex Compounds

1.
Department of Chemistry, Nankai University, Tianjin 300071

Received Date: 1 February 1990
Available Online: 15 August 1991

By utilizing the formation constants of Ni(Ⅱ)-Glycine binary complex compounds and the corresponding heats of formation from literature as well as the formation constants of Ni(Ⅱ)-Oxalate binary complex compounds and the corresponding heats of formation incorporating with the formation constants of Ni(Ⅱ)-Oxalate-Glycine competitive ternary complex compounds determined in our laboratory, the heats of formation of Ni(Ⅱ)-Oxalate-Glycine competitive ternary complex compounds have been determined at 25 ℃, I=0.1 mol·dm~(-3) (KNO_3) in aqueous solution by means of RD-1 model automatic conduction calorimeter. The results obtained are:
ΔH_(AB)~M=-14.3±2.0 kJ·mol~(-1)
ΔH_(A2B)~M=-27.0±2.0 kJ·mol~(-1)
ΔH_(AB2)~M=-40.2±2.0 kJ·mol~(-1)
- Ternary complex compounds; Heats of formation; Calarimetric determination
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