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Citation: Gao Zuo-Ning, Wen Xiao-Lin, Shen Wei-Guo, Fang Jian. Determination of the Osmotic Coefficients of the Aqueous Solution of Polyhydroxylated Compound at 313,323and 333K[J]. Acta Physico-Chimica Sinica, ;1996, 12(03): 284-288. doi: 10.3866/PKU.WHXB19960319 shu

Determination of the Osmotic Coefficients of the Aqueous Solution of Polyhydroxylated Compound at 313,323and 333K

1.
Department of Chemistry,Ningxia University,Yinchuan 750021

Received Date: 8 June 1995
Available Online: 15 March 1996

The determination of the osmotic coefficients of the aqueous solution of polyhydroxylated compounds such as glycol, glycerol, sucrose and glucose by Vapour Pressure Osmometry at 313, 323 and 333K was carried out over the concentration range of 0.0-2.1mol﹒kg-1 and 0.0-2.0 mol﹒kg-1 respectively. By using a linear least-square fitting routine, the osmotic coefficients were fitted by a simple polynomial equation, It was found that the relation between the experimental results of molal osmotic coefficients Φ and the mass molal concentration of the solution m are in agreement with that from the polynomial fitting at different temperature. Factors which influence the osmotic coefficient such as the number of hydroxyl of polyhydroxylated compounds or the molecule weight of the solute molecules should be further studied, this work will also contribute to the studies of other thermodynamical properties of the aqueous solution of polyhydroxylated compound.
- Polyhydroxylated compound,
- Osmotic coefficient of aqueous solution,
- Vapour presssure osmometry
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