摘要
在60℃和恒定离子强度下,用平衡法研究了0.004mol dm^(-3)Cr(NO_3)_3在三种不同浓度顺丁烯二酸H_2A(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)A_2]^(2-),[Cr_2(OH)A_2]^+[Cr_3(OH)_2A_2]^+和CrA_3^(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Cr^(3+)和顺丁烯二酸浓度下Cr^(3+)的状态,共生成11种配合物,本文对其形成规律进行了讨论.
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.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1991年第1期76-81,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助课题
关键词
铬
水解
聚合
顺丁烯二酸
Chromium, hydrolysis, polymerization, maleic acid, hydrolysis constant
