【摘要】 在60℃和恒定离子强度下,用平衡法研究了0.004mol dm^-3Cr（NO₃）₃在三种不同浓度顺丁烯二酸H₂A(0.008,0.010,0.014mol dm^-3的水溶液中的状态,用计算机拟合和p.q.r分析方法得到了[Cr（OH）A₂]^2-,[Cr₂（OH）A₂]⁺[Cr₃（OH）₂A₂]⁺和CrA₃^3-四种水解产物,并计算了其平衡常数,在我们系列工作中研究了在宽广的Cr³⁺和顺丁烯二酸浓度下Cr³⁺的状态,共生成11种配合物,本文对其形成规律进行了讨论.更多还原

【Abstract】 The hydrolytic polymerization state of 0.004 mol dm-3 Cr(NO3)3 aqueous solutions was studied in the presence of malcic acid H2A with three different concentrations (0.008, 0.010. 0.0140mol dm-3) by equilibrium-pH method at 60℃ and constant ionic strength. Four hydrolytic products CCr(OH)A2] 2-, [Cr2(OH)A2) +, [Cr3(OH)2A3) +and CrA33-have been found by computer fitting and pqr analysis method and obtained their equilibrium constants. Eleven species have been found in the wide region of concentration of malcic acid and chro-mium(Ⅲ) ion in our series work. The regularity for formation of species was discussed.更多还原