ISSN:
1572-8927
Keywords:
Solubility
;
high pressure
;
hydrophobic hydration
;
partial molar volume
;
naphthalene
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00647412
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