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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of solution chemistry 22 (1993), S. 727-732 
    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
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of solution chemistry 16 (1987), S. 649-657 
    ISSN: 1572-8927
    Keywords: Solubility ; high pressure ; xylene ; hydrophobic interaction ; partial molar volume
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The solubilities of o-, m- and p-xylene in water were measured at 25.0°C up to 250, 385, and 50 MPa, respectively. The solubility increased with increasing pressure up to 120 MPa (50 MPa for p-xylene) and then decreased. The reaction volumes, ΔVo accompanying the dissolution at 0.1 MPa were estimated as −3.6±0.5, −3.4±0.5, and −4.1±0.5 cm3-mol−1 for o-, m-, and p-xylene, respectively, from the pressure dependences of the solubilities. The limiting partial molar volumes, of p- and o-xylene in water under high pressure were estimated from ΔVo and the molar volume of the xylene. The partial molar volumes decreased with increasing pressure. The reaction volume for the formation of intra-molecular pairwise hydrophobic interaction between the methyl groups, as proposed by Ben-Naim, is discussed for the ΔVo of p- and o-xylene at 0.1 MPa.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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