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NH4VO3在NH4H2PO4-H2O和(NH4)3PO4-H2O体系中的溶解度
公绪莉1; 张长桥1; 宁朋歌2; 曹宏斌2; 张懿2
2016
Source Publication物理化学学报
ISSN1000-6818
Volume32.0Issue:005Pages:1134
Abstract采用等温溶解法测定了偏钒酸铵NH4VO3在NH4H2PO4-H2O和(NH4)3PO4-H2O体系中T=298.15-328.15 K时的溶解度以及溶液的密度和p H值。结果表明,NH4VO3的溶解度随着(NH4)3PO4或NH4H2PO4溶液浓度的增大,先降低后升高,这是由于同离子效应、化学反应平衡及离子活度的共同作用。比较T=298.15K时,NH4VO3分别在NH4H2PO4-H2O、(NH4)2HPO4-H2O和(NH4)3PO4-H2O体系中溶解度,发现在相同的磷酸盐浓度下NH4VO3的溶解度在NH4H2PO4-H2O体系中最大,在(NH4)3PO4-H2O体系中居中,在(NH4)2HPO4-H2O体系中最小。进一步地,在T=298.15 K和磷酸盐浓度C=0.5 mol·kg^-1时,结合pH值和反应溶度积常数K SP等计算三个体系中的平均离子活度系数(γ±),发现γ±值在(NH4)2HPO4-H2O体系中最大,在(NH4)3PO4-H2O体系中居中,在NH4H2PO4-H2O体系中最小,与溶解度规律一致。
Keyword偏钒酸铵 溶解度 NH4H2PO4溶液 (NH4)3PO4溶液
Language英语
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/44536
Collection中国科学院过程工程研究所
Affiliation1.山东大学
2.中国科学院过程工程研究所
Recommended Citation
GB/T 7714
公绪莉,张长桥,宁朋歌,等. NH4VO3在NH4H2PO4-H2O和(NH4)3PO4-H2O体系中的溶解度[J]. 物理化学学报,2016,32.0(005):1134.
APA 公绪莉,张长桥,宁朋歌,曹宏斌,&张懿.(2016).NH4VO3在NH4H2PO4-H2O和(NH4)3PO4-H2O体系中的溶解度.物理化学学报,32.0(005),1134.
MLA 公绪莉,et al."NH4VO3在NH4H2PO4-H2O和(NH4)3PO4-H2O体系中的溶解度".物理化学学报 32.0.005(2016):1134.
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