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Equilibrium water partial pressures and salt solubilities in aqueous NH4HSO3 to low temperatures
Yao, Y; Massucci, M; Clegg, SL; Brimblecombe, P
1999-05-13
发表期刊JOURNAL OF PHYSICAL CHEMISTRY A
卷号103期号:19页码:3678-3686
文章类型Article
摘要Equilibrium water partial pressures (pH(2)O) above 3.69(5), 5.67(2), and 8.65(1) mol kg(-1) NH4HSO4(aq), and 10.19 mol kg(-1) H2SO4(aq), have been determined using a capacitance manometer over the temperature ranges 258.1(1)-239.5(6) K and 298.1(2)-238.5(2) K, respectively. Measured pH(2)O above the aqueous H2SO4 solution agree with values calculated using the model of Clegg et al. (J. Phys. Chem. A 1998, 102, 2137-2154) to within +5.3% to -2.8% at all temperatures. Results for the NH4HSO4(aq) solutions are also consistent with calculated pH(2)O, with deviations of +0.45% to +6.27% (measured - calculated) for all data. The formation of solids was observed in the NH4HSO4(aq) solutions at the following temperatures: 258.0(6) +/- 0.1 K [3.69(5) mol kg(-1)], 246.4(7) +/- 0.1 K [5.67(2) mol kg(-1)], and 261.0(1) +/- 0.1 K [8.65(1) mol kg(-1)]. The data are consistent with predictions of ice precipitation in the 3.69(5) mol kg(-1) test solution, letovicite ((NH4)(3)H(SO4)(2(cr))) in the 8.65(1) mol kg(-1) solution, and both ice and letovicite in the 5.67(2) mol kg(-1) solution. The liquid-phase compositions of the solutions containing precipitates are calculated for different temperatures. The results of the experiments are compared with solubility data from other studies and with model predictions of solid/liquid equilibrium for NH4HSO4-H2SO4-H2O mixtures to low temperature over a wide range of composition.
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]DROPLETS
收录类别SCI
语种英语
WOS研究方向Chemistry ; Physics
WOS类目Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS记录号WOS:000080552200011
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6025
专题青海盐湖研究所知识仓储
作者单位1.Univ E Anglia, Sch Environm Sci, Norwich NR4 7TJ, Norfolk, England
2.Chinese Acad Sci, Inst Salt Lakes, Xian 710043, Peoples R China
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Yao, Y,Massucci, M,Clegg, SL,et al. Equilibrium water partial pressures and salt solubilities in aqueous NH4HSO3 to low temperatures[J]. JOURNAL OF PHYSICAL CHEMISTRY A,1999,103(19):3678-3686.
APA Yao, Y,Massucci, M,Clegg, SL,&Brimblecombe, P.(1999).Equilibrium water partial pressures and salt solubilities in aqueous NH4HSO3 to low temperatures.JOURNAL OF PHYSICAL CHEMISTRY A,103(19),3678-3686.
MLA Yao, Y,et al."Equilibrium water partial pressures and salt solubilities in aqueous NH4HSO3 to low temperatures".JOURNAL OF PHYSICAL CHEMISTRY A 103.19(1999):3678-3686.
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