Volumetric properties of some binary liquid systems: n-Heptane+Aromatic hydrocarbons between 303.15 and 323.15K
Rahaman, MA; Islam aziz, MS; Akhtar, S
| HERO ID | 854612 |
|---|---|
| In Press | No |
| Year | 2011 |
| Title | Volumetric properties of some binary liquid systems: n-Heptane+Aromatic hydrocarbons between 303.15 and 323.15K |
| Authors | Rahaman, MA; Islam aziz, MS; Akhtar, S |
| Journal | Journal of Molecular Liquids |
| Volume | 162 |
| Issue | 1 |
| Page Numbers | 26-32 |
| Abstract | Densities, rho, have been measured for the binary systems of n-heptane + toluene, + o-xylene and + mesitylene in the whole range of composition between 303.15 and 323.15 K at an interval of 5 K. From measured, rho, excess molar volumes, V(m)(E), partial molar volumes, (V(i)) over bar, thermal expansivities, alpha, and excess thermal expansivities, alpha(E), are also estimated. For all systems, measured rho, (V(i)) over bar and alpha values are fitted to polynomial equations of appropriate forms, whereas, V(m)(E) and alpha(E) are fitted to the Redlich-Kister equations. In the whole range of composition, v(m)(E) are positive for n-heptane + toluene but negative for the other two systems. In n-heptane + toluene, dispersive forces are suggested to dominate, whereas, in the other two 'favorable geometric fitting' seem to overpower due to increasing number of -CH(3) as substituent in the relevant aromatic hydrocarbons. (C) 2011 Elsevier By. All rights reserved. |
| Doi | 10.1016/j.molliq.2011.05.012 |
| Wosid | WOS:000293672100005 |
| Url | http://linkinghub.elsevier.com/retrieve/pii/S0167732211001796 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Density; Excess molar volume; Partial molar volume; Excess thermal expansivity; Aromatic hydrocarbon |
| Is Qa | No |