Excess molar volumes,
have been measured using a dilatometric technique for binary mixtures
of
heptan-1-ol (n-C7H15OH) +
pentane (n-C5H12), + hexane
(n-C6H14), + heptane
(n-C7H16), + octane
(n-C8H18), and + 2,2,4-trimethylpentane
(2,2,4-TMP) at T = 293.15 K.
has been found to be negative
throughout the entire range of composition for
(x)n-C7H15OH
+ (1 −
x)n-C5H12, + (1
− x)n-C6H14, and
+
(1 − x)2,2,4-TMP.
has been found to be positive at lower mole fractions of
n-C7H15OH and
negative
at higher mole fractions of
n-C7H15OH for
(x)n-C7H15OH
+ (1 − x)n-C7H16
and (x)n-C7H15OH +
(1 −
x)n-C8H18 with an
inversion of sign from positive to negative values of
occurring at x ∼ 0.18 and x ∼
0.43, respectively, for these mixtures.
has been fitted in a smoothing equation.
Excess molar volumes,
,
at T = 298.15 K, and kinematic viscosities, ν, at
T = 303.15 K, have been
measured for binary liquid mixtures of cyclohexanone
(C6H10O) + dichloromethane
(CH2Cl2), +
trichloromethane (CHCl3), + l,2-dichloroethane
(CH2ClCH2Cl), + trichloroethene
(CHClCCl2), + 1,1,1-trichloroethane (CCl3CH3), and +
cyclohexane (c-C6H12). The
values of ν and
have been fitted in
appropriate equations using a least-squares method.
has been found to be negative throughout the
entire range of composition for mixtures of
C6H10O + CH2Cl2,
+ CHCl3, + CHClCCl2, and +
CCl3CH3,
and positive for C6H10O +
c-C6H1
2. For
C6H10O +
CH2ClCH2Cl,
has been found to be positive at
lower mole fractions of C6H10O, and negative at
higher mole fractions. The analysis has shown that
McAllister's approach correlates ν of the present mixtures
throughout the entire composition range to a
significantly high degree of accuracy.
Excess molar volumes,
relative
permittivities, εr, and refractive indexes,
n
D, have been measured for
binary mixtures of 1,1,2,2-tetrachloroethane
(CHCl2CHCl2) with pyridine
(C5H5N), anisole
(C6H5OCH3),
methyl ethyl ketone
(CH3COC2H5), and 1,4-dioxane
(1,4-C4H8O2) at 303.15 K.
has been found to
be
negative throughout the entire mole fraction range for all these
mixtures. The values of the deviations
of εr and n
D from a mole fraction
average, which are represented respectively by Δεr and
Δn
D have been
calculated. The results of
Δn
D, and Δεr for the various
mixtures have been fitted by the method of
least squares to smoothing equations.
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