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VOSO_4?2.76H_2O(s)在水和硫酸水溶液中的溶解焓
刘建国; 秦野; 严川伟
2010-04-14
Source Publication化学学报
Issue7Pages:722-726
Abstract在298.15K下利用具有恒温环境的溶解-反应热量计,测定了VOSO4?2.76H2O(s)在水和0.5mol?kg-1硫酸水溶液中的摩尔溶解焓.在硫酸水溶液中VOSO4?2.76H2O(s)摩尔溶解焓的负值比在纯水中要小很多,这说明VOSO4在硫酸水溶液中具有较高的能量状态.借助VOSO4水溶液的离子缔合平衡和硫酸的二级解离平衡,改进了Archer方法,并用这种改进的方法分别估算了VOSO4?2.76H2O(s)在水中的标准摩尔溶解焓△sHm=-29.18kJ?mol-1,以及在0.5mol?kg-1硫酸水溶液中的标准摩尔溶解焓△sHm=-25.79kJ?mol-1.根据离子缔合平衡和硫酸二级解离平衡的计算结果,硫酸根离子浓度受到硫酸二级解离平衡控制,使部分[VOSO4]0离子对解离,致使硫酸氧钒-硫酸水溶液中的自由氧钒离子(VO2+)增加.
description.department中国科学院金属研究所金属腐蚀与防护国家重点实验室;
Keyword钒氧化还原液流电池 溶解焓 硫酸氧钒 硫酸
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/23835
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
刘建国,秦野,严川伟. VOSO_4?2.76H_2O(s)在水和硫酸水溶液中的溶解焓[J]. 化学学报,2010(7):722-726.
APA 刘建国,秦野,&严川伟.(2010).VOSO_4?2.76H_2O(s)在水和硫酸水溶液中的溶解焓.化学学报(7),722-726.
MLA 刘建国,et al."VOSO_4?2.76H_2O(s)在水和硫酸水溶液中的溶解焓".化学学报 .7(2010):722-726.
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