Mixing properties and modelling of methanol with chlorobenzene and bromobenzene at 293, 303, and 313 K

Refractive index, ultrasonic velocity and density for the binary mixtures of methanol with chlorobenzene and bromobenzene at 293, 303, and 313 K have been measured over the entire composition range. The values of refractive index (n), ultrasonic velocity (u), and density (ρ) were used to compute dev...

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Bibliographic Details
Published in:Physics and chemistry of liquids 2009-04, Vol.47 (2), p.113-122
Main Authors: Gupta, Manisha, Shukla, Divya, Parveen, Shahla, Singh, Shashi, Shukla, J.P.
Format: Article
Language:English
Subjects:
bromobenzene
chlorobenzene
isentropic compressibility
methanol
molar refraction
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Summary:Refractive index, ultrasonic velocity and density for the binary mixtures of methanol with chlorobenzene and bromobenzene at 293, 303, and 313 K have been measured over the entire composition range. The values of refractive index (n), ultrasonic velocity (u), and density (ρ) were used to compute deviation in molar refraction (ΔR m ) and deviation in isentropic compressibility (Δκ s ). The results of deviation were fitted to the Redlich-Kister polynomial equation to derive the binary coefficients and standard deviation. Both the systems exhibited negative values of ΔR m and Δκ s over the entire composition range. The density, ultrasonic velocity and refractive index were correlated to first order polynomial with respect to mole fraction. Experimental data of physical properties (refractive index, isentropic compressibility and density) were compared with the results obtained by theoretical estimation procedures.
ISSN:0031-9104
1029-0451
DOI:10.1080/00319100701488474