Effect of lactose on the diffusion of ferric sulfate in aqueous solutions at 25 ¡ãC

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• 作者：Lu&iacute ; s M.P. Ver&iacute ; ssimo^a ; ^{luisve@gmail.com} ; Teresa I.C. Valada^a ; Ana C.F. Ribeiro^a ; ^{anacfrib@ci.uc.pt} ; Ab&iacute ; lio J.F.N. Sobral^a ; Victor M.M. Lobo^a ; ^{vlobo@ci.uc.pt} ; Miguel A. Esteso^b ; ^{miguel.esteso@uah.es}
• 关键词：Diffusion coefficient ; Lactose ; Ferric sulfate ; Solutions ; Transport properties
• 刊名：Journal of Chemical Thermodynamics
• 出版年：2013
• 出版时间：April, 2013
• 年：2013
• 卷：59
• 期：Complete
• 页码：135-138
• 全文大小：302 K

文摘

Diffusion coefficients of an aqueous system containing ferric sulfate 0.05 mol ¡¤ dm^?3 and lactose at different concentrations at 25 ¡ãC have been measured, using a conductimetric cell and an automatic apparatus to follow diffusion. The cell uses an open-ended capillary method and a conductimetric technique is used to follow the diffusion process by measuring the resistance of a solution inside the capillaries, at recorded times. These data permit us to have a better understanding of the transport behaviour of ferric sulfate in different media. These studies have been complemented by molecular mechanics and ab initio calculations.