Effect of pressure on the coexistence curve of methanol+n-heptane in the near critical region
โ Scribed by Arturo G. Aizpiri; Francisco Monroy; Arturo G. Casielles; Ramon G. Rubio; Francisco Ortega
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 694 KB
- Volume
- 173
- Category
- Article
- ISSN
- 0301-0104
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๐ SIMILAR VOLUMES
The coexistence curves of liquid (N,N-dimethylacetamide + heptane) have been determined within 15 K of the critical temperature by measurements of the refractive index n. The critical amplitudes B and the critical exponents b have been deduced from (T, n), (T, x), and (T, f) curves. Experimental val
## Abstract The isothermal compressibility (at constant composition __x__) __k__~T,__x__~, was calculated in the neighborhood of the critical locus for seven mixtures containing 3.5 to 19.6 mole % heptane and analyzed in terms of the reduced pressure variable ฯ = (__P__ โ Pฬ)/Pฬ where Pฬ is the pre
An anafysis is made of the effect of gravity-induced gradients on the measurement of coexistence curves for binary mixtures near the critical solution temperature. Results are obtained for a classical model and for a scaled equation of state..It is shown that gmdients cause experimental artifacts th