ISSN:
1572-8927
Keywords:
Heat capacity
;
density
;
excess volume
;
trichloromethane
;
1,4-dioxane
;
diisopropyl ether
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Excess molar heat capacities C P E at constant pressure and excess molar volumes V E have been determined, as a function of mole fraction x1 at 25°C and atmospheric pressure, for 10 binary liquid mixtures containing either trichloromethane (series I) with C6H5CH3, or C6H5Cl, or C5H5N, or CH3COCH3, or C6H5NO2; 1,4-dioxane (series II) with (C2H5)3N, or (CH3)2CHOCH(CH3)2, or (CH3 2SO); or diisopropyl ether (di-1-methylethyl ether) (series III) with (C2H5)3N, or CHCl3. The dipole momentsp (10−30C-m) of the substances range from nearly 0 to 14.1 for nitrobenzene. The C P E of series I and III are all positive, with C P E (x1=0.5) (J-K−1-mol−1) ranging from 1.04 for {x1CHCl3+x2C6H5Cl} to 16.66 for {x1(CH3)2CHOCH(CH3)2+x2CHCl3}. In series II, the C P E are positive and small for {x11,4-C4H8O2+x2(CH3)2CHOCH(CH3)2}, S-shaped and small for {x11,4-C4H8O2+x2(C2H5)3N}, and negative and small for {x11,4-C4H8O2+x2(CH3)2SO}. The excess volumes are small and positive for {x1CHCl3+x2C6H5CH3}, S-shaped for {x1CHCl3+x2CH3COCH3}, {x11,4-C4H8O2+x2(C2H5)3N} and {x1(CH3)2CHOCH(CH3)2+x2(C2H5)3N}, and negative for the other systems.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00973543
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