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磷酸氢二钾和磷酸三钾混合溶液的电导率测定
Determination on electric conductivity of dipotassium hydrogen phosphate and potassium phosphate mixed solution
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| Site：http://www.lfyff.com Time：2010-3-9 16:02:32 By：全国磷复肥信息网 |
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摘 要
测定了磷酸三钾和磷酸氢二钾不同摩尔比的混合溶液在不同温度下的电导率｡研究结果表明:电导率随温度的升高而升高,且在其他条件相同的情况下,PO43-浓度较低时电导率随n(K3PO4) / n(K2HPO4)的升高而升高,PO43-浓度较高时,在较低温度范围n(K3PO4) / n(K2HPO4)越低,电导率越高,而在较高温度范围n(K3PO4) / n(K2HPO4)越高,电导率越高｡
[中图分类号]TQ126.3 [文献标识码]A [文章编号] 1007–6220(2010)01–0018–02
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| 李国霞,涂凌飞,王辛龙,张志业 |
| (四川大学 化学工程学院, 四川 成都 610065) |
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Keywords
electric conductivity, dipotassium hydrogen phosphate, potassium phosphate
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Abstract
The electric conductivities are determined of the mixed solutions both potassium phosphate and dipotassium hydrogen phosphate with different molar ratio and various temperatures. The results show: the electric conductivities of the mixed solutions rise with increasing temperature, under the same condition, in lower PO43- concentration with increasing ratio of n(K3PO4) / n(K2HPO4),or in higher PO43- concentration, with decreasing ratio of n(K3PO4)/ n(K2HPO4)at low temperatures, with increasing ratio of n(K3PO4)/ n(K2HPO4)at higher temperature.
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| LI Guo-xia, TU Ling-fei, WANG Xin-long, ZHANG Zhi-ye |
| (School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China) |
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