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Lead (II) cholate solubility
Emilio Bottari1, Maria Rosa Festa
1Dipartimento di Chimica, Università La Sapienza P. le A. Moro 5. emilio.bottari@uniroma1.it
Abstract:
In the framework of the research carried out on the behaviour of the salts of bile acids in aqueous solutions, the lead (II) cholate solubility was determined at 25 degrees C and in 0.100, 0.500 and 0.800 mol dm(-3) N(CH3)4Cl, as ionic medium. The change of its solubility was studied as a function of the cholate and hydrogen ion concentration. Solubility and electromotive force measurements of suitable galvanic cells were carried out and from the results lead (II) cholate solubility product could be calculated and the presence of associated species in solution in the ratio 1:3 and 1:4 between lead (II) and cholate was assumed. The relative constants were determined, as well. The results of this work allow us to obtain the free cholate concentration in equilibrium with solid lead (II) cholate.
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A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...

