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Determination of the solubility products in water at 20 °C of 32 metallic carboxylates / Stéphanie Mauchauffee in Industrial & engineering chemistry research, Vol. 47 N°20 (Octobre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°20 (Octobre 2008) . - P. 7533-7537 Titre : Determination of the solubility products in water at 20 °C of 32 metallic carboxylates Type de document : texte imprimé Auteurs : Stéphanie Mauchauffee, Editeur scientifique ; Eric Meux, Editeur scientifique ; Michel Schneider, Editeur scientifique Année de publication : 2008 Article en page(s) : P. 7533-7537 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Metallic  carboxylates  Carbons Résumé : The solubility products of 32 metallic carboxylates resulting from the precipitation of seven cations (Cd, Co, Cu, Mn, Ni, Pb, and Zn) with six linear saturated carboxylates (heptanoate, octanoate, nonanoate, decanoate, dodecanoate, and octadecanoate) are reported. Solubility measurements were performed using the analytical method with freshly precipitated metallic carboxylates. From the measured metal concentration and equilibrium pH value, solubility products, Ksp, were determined. The results indicate a linear relationship between the negative logarithm of the solubility product and the carbon number in the aliphatic chain that is valid from 7 to 12 carbons. The determination of the pKsp value of copper octadecanoate shows the limit of the linear model. Indeed, the experimental value obtained demonstrates that pKsp tends to a limiting value and becomes independent of the chain length. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071595a [article] Determination of the solubility products in water at 20 °C of 32 metallic carboxylates [texte imprimé] / Stéphanie Mauchauffee, Editeur scientifique ; Eric Meux, Editeur scientifique ; Michel Schneider, Editeur scientifique . - 2008 . - P. 7533-7537. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°20 (Octobre 2008) . - P. 7533-7537 Mots-clés : Metallic  carboxylates  Carbons Résumé : The solubility products of 32 metallic carboxylates resulting from the precipitation of seven cations (Cd, Co, Cu, Mn, Ni, Pb, and Zn) with six linear saturated carboxylates (heptanoate, octanoate, nonanoate, decanoate, dodecanoate, and octadecanoate) are reported. Solubility measurements were performed using the analytical method with freshly precipitated metallic carboxylates. From the measured metal concentration and equilibrium pH value, solubility products, Ksp, were determined. The results indicate a linear relationship between the negative logarithm of the solubility product and the carbon number in the aliphatic chain that is valid from 7 to 12 carbons. The determination of the pKsp value of copper octadecanoate shows the limit of the linear model. Indeed, the experimental value obtained demonstrates that pKsp tends to a limiting value and becomes independent of the chain length. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071595a