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Effect of pressure on the solubility of naphthalene in water at 25°C (1993)

Sawamura, S. ; Tsuchiya, M. ; Ishigami, T. ; [weitere]

Springer

Journal of solution chemistry 22 (1993), S. 727-732

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ISSN: 1572-8927

Schlagwort(e): Solubility ; high pressure ; hydrophobic hydration ; partial molar volume ; naphthalene

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Abstract Solubility of naphthalene in water was measured at 25°C and pressures up to 200 MPa. The solubility decreased with increasing pressure. From the pressure coefficient of the solubility, the volume change ΔV accompanying the dissolution was estimated as 13.8±0.4 cm 3 -mol −1 . Further we estimated the volume change ΔV CH accompanying hydrophobic hydration as −0.1±0.6 cm 3 -mol −1 using the ΔV value, the molar volume of crystalline naphthalene, and the partial molar volume of naphthalene in n-heptane. This ΔV CH is much larger (i.e., less negative) than that for hydrophobic hydration of alkyl-chain compounds and suggests that the hydration structure of naphthalene differs from that of alkyl-chain compounds.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00647412

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