Freezing Point Depressions of Dilute Solutions of Alkali Metal Chlorides and Bromides
Data(s) |
18/12/2007
18/12/2007
1999
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Resumo |
Freezing point depressions (¿Tf) of dilute solutions of several alkali metal chlorides and bromides were calculated by means of the best activity coefficient equations. In the calculations, Hückel, Hamer and Pitzer equationswere used for activity coefficients. The experimental ¿Tf values available in the literature for dilute LiCl, NaCl and KBr solutions can be predicted within experimental error by the Hückel equations used. The experimental ¿Tf values for dilute LiCl and KBr solutions can also be accurately calculated by corresponding Pitzer equations and those for dilute NaCl solutions by the Hamer equation for this salt. Neither Hamer nor Pitzer equations predict accurately the freezing points reported in the literature for LiBr and NaBr solutions. The ¿Tf values available for dilute solutions of RbCl, CsCl or CsBr are not known at the moment accurately because the existing data for these solutions are not precise. The freezing point depressions are tabulated in the present study for LiCl, NaCl and KBr solutions at several rounded molalities. The ¿Tf values in this table can be highly recommended. The activity coefficient equations used in the calculation of these values have been tested with almost allhigh-precision electrochemical data measured at 298.15 K. |
Identificador |
TMP.objres.339.pdf http://www.doria.fi/handle/10024/31088 URN:ISBN:951-764-844-8 |
Idioma(s) |
en |
Relação |
Julkaisu/Report - Lappeenrannan teknillinen yliopisto, Kemiantekniikan osasto ISSN 1459-2878 URN:ISSN:1459-2878 |
Palavras-Chave | #Potassium bromide #Activity coefficient #Aqueous solutions #Freezing point #Sodium chloride #Lithium Chloride |
Tipo |
Sarjat Series |