Molar excess volumes of ternary mixtures containing ether

2001 ◽  
Vol 79 (12) ◽  
pp. 1910-1914 ◽  
Author(s):  
V K Sharma ◽  
Romi

Molar excess volumes (VEijk) of 1,3-dioxolane (i) + benzene (j) + cyclohexane (k); 1,3-dioxolane (i) + benzene (j) + n-hexane (k); and 1,3-dioxolane (i) + benzene (j) + n-heptane (k) ternary mixtures have been measured dilatometrically as a function of composition at 298.15 K. The observed data have been analysed in terms of (i) Graph theoretical approach; (ii) Flory's theory; and (iii) Lacombe and Sanche's theory of liquid mixtures. It has been observed that VEijk values predicted by graph theoretical approach compare better with the corresponding experimental values than with the VEijk data predicted by other approaches.Key words: molar excess volumes, molar volume interaction parameters, connectivity parameter of third degree 3ξ.


1997 ◽  
Vol 75 (12) ◽  
pp. 1896-1904 ◽  
Author(s):  
V.K. Sharma ◽  
Khem Chand Kalra ◽  
A. Katoch

Molar excess volumes, [Formula: see text], and molar excess enthalpies, [Formula: see text], of nitrobenzene (i) + benzene (j) + cyclohexane (k), nitrobenzene (i) + benzene (j) + n-hexane (k), and nitrobenzene (i) + benzene (j) + n-heptane (k) ternary mixtures have been determined dilatometrically and calorimetrically as a function of composition at 298.15 K. The data have been analyzed in terms of (i) the graph-theoretical approach and (ii) Flory's Theory. It has been observed that [Formula: see text], data calculated by graph theoretical as well as Flory's approach compare well with their corresponding experimental values. Keywords: molar excess volumes, molar excess enthalpies, specific interactions, molar volume interaction parameter, molar interaction enthalpy parameter.



1983 ◽  
Vol 61 (10) ◽  
pp. 2321-2328 ◽  
Author(s):  
Prem P. Singh ◽  
Vinod K. Sharma

Molar excess volumes, [Formula: see text], of some (i + j + k) ternary mixtures of non-electrolytes have been determined dilatometrically at 298.15 and 308.15 K and the same have been analysed in terms of (a) Lacombe and Sanchez theory and (b) an approach based on the mathematical discipline of graph theory utilizing information on the (i + j), (j + k), and (k + i) binary mixtures alone. It has been observed that the [Formula: see text] data predicted by the graph theoretical approach employing the graph theoretical binary interaction coefficients αij, αjk, and αki compare better with the corresponding experimental values than the [Formula: see text] values predicted by Lacombe and Sanchez theory utilizing Lacombe and Sanchez's binary interaction coefficients χij, χjk, and χki of the (i + j), (j + k), and (k + i) mixtures. The [Formula: see text] data have also been utilized to extract, via the Mayer–McMillan approach, self and cross volume interaction coefficients Vjj, Vkk, Vjk. Vjjk, and Vjkk and the Vjk values have been utilized to study molecular interactions between the jth and the kth components in the presence of the ith component of these (I + j + k) mixtures.



1980 ◽  
Vol 58 (18) ◽  
pp. 1902-1905 ◽  
Author(s):  
Ram K. Nigam ◽  
Prem P. Singh ◽  
Krishan C. Singh ◽  
Mohan Singh ◽  
Ruchi Mishra

Molar excess volumes, VE at 298.15 and 308.15 K, molar excess enthalpies HE at 308.15 K, and total vapour pressure at 298.15 and 308.15 K. have been measured for binary mixtures of 1,2-dichloroethane with aromatic hydrocarbons. The VE and HE data for an equimolar mixture at 308.15 K only have been utilized to predict VE, HE, and TSE values (using Sanchez and Lacombe theory) for these mixtures as a function of temperature and composition. The agreement between the predicted and the corresponding experimental values is good so far as VE and HE data are concerned but the same is not true of the TSE values.



1973 ◽  
Vol 26 (2) ◽  
pp. 431 ◽  
Author(s):  
S Ruenkrairergsa ◽  
NF Pasco ◽  
DV Fenby

The molar excess enthalpies and molar excess volumes of carbon tetra- chloride + hexafluorobenzene have been measured at 298.15 K and 308.15 K. The values for the equimolar mixture at 298 15 K are 490 J mol-1 and 0.875 cm3 mol-1 respectively. The results are compared with the values for other liquid mixtures containing a fluorocarbon as one component, and discussed in terms of solubility parameter theory.







1984 ◽  
Vol 18 (3) ◽  
pp. 333-344 ◽  
Author(s):  
P.P. Singh ◽  
R.K. Nigam ◽  
S.P. Sharma ◽  
Sadhna Aggarwal




1994 ◽  
Vol 28 (1) ◽  
pp. 35-40 ◽  
Author(s):  
G. Subramanya Sastry ◽  
U. Srinivasulu ◽  
K. Sivakumar ◽  
P. Ramachandra Naidu


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