Abstract
The phase boundary of the binary liquid system CS2+CH3NO2 is studied over nearly six decades in reduced temperature 3×10−6<ε=(T C−T)/T C<2×10−1 and over the composition range 8-98 mole % of CS2. The critical parameters areT C=335.132K andx C=57.34 mole % of CS2. A single critical exponentβ=0.315±0.004 fits the observations over the entire range with no indication ofβ increasing to the classical value of 1/2 far away fromT C. The diameter of the coexistence curve shows a rectilinear behaviour only far away fromT C. NearT C, the deviation ΔX from the rectilinear law seems to fit a curve of the form ΔX=fε7/8 exp (−gε h), the derivative of which has a singularity like that of specific heat. An ambiguity in the analysis of the data in terms of mole fractions and volume fractions is pointed out. It is also suggested that the curvature of the diameter may be much weaker in a liquid-gas system and hence might have escaped detection.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Biswas A C 1973Pramana 1 109
Blagoi Yu P, Sokhan V I and Pavlichenko L A 1971Sov. Phys. JETP 33 1183
Buckingham M J 1972 inPhase transitions and critical phenomena, Vol. 2 eds Domb C and Green M S (Academic Press, London and New York) p 17
Chandra Sekhar P, Subramanyam S V and Gopal E S R 1972Proc. Nucl. Phys. Solid State Phys. Symp. 14C 199
Chieux P and Sienko M J 1970J. Chem. Phys. 53 566
Cornfeld A B and Carr H Y 1972Phys. Rev. Lett. 29 28
Cox J D and Herington E F G 1956Trans. Faraday. Soc. 52 926
Fisher M E 1967Rep. Progr. Phys. 30 615
Francis A W 1956J. Phys. Chem. 60 20
Giterman M Sh and Malyshenko S P 1968Sov. Phys. JETP 26 1176
Gorodetsky G, Shtrikman S and Treves D 1966Solid State Commun. 4 147
Govindarajan K, Subramanyam S V and Gopal E S R 1972J. Chem. Phys. 56 4235
Green M S, Cooper M J and Levelt Sengers J M H 1971Phys. Rev. Lett. 26 492
Haselden G G, Holland F A, King M B and Strickland Constable R F 1957Proc. Roy. Soc. Sec. A 240 1
Heller P 1967Rep. Progr. Phys. 30 731
Hemmer P C and Stell G 1970Phys. Rev. Lett. 24 1284
Howard D G, Dunlap B D and Dash J G 1965Phys. Rev. Lett. 15 628
Jasnow D and Goldburg W I 1972Phys. Rev. 6A 2492
Jones D C and Betts H F 1928J. Chem. Soc. 1177
Joukovsky N I 1934Bull. Soc. Chim. Belg. 43 397
Landau L D and Lifshitz E M 1968Statistical physics, 2nd edn (Oxford: Pergamon Press) chap 14
Lele M V, Subramanyam S V and Gopal E S R 1971Chem. Phys. Lett. 11 542
Levelt Sengers J M H Straub J and Vicentini Missoni M 1971J. Chem. Phys. 54 5034
Mason S G, Naldrett S N and Maass O 1940Can. J. Res. B18 103
Mermin N D 1971Phys. Rev. Lett. 26 169
Mermin N D and Rehr J J 1971Phys. Rev. Lett. 26 1155
Michels A, Levelt J M and DeGraaf W 1958Physica, Utrecht 24 659
Muller K A and Berlinger W 1971Phys. Rev. Lett. 26 13
Poppe G 1935Bull. Soc. Chim. Belg. 44 640
Quantie C 1954Proc. Roy. Soc. Sec. A 234 90
Ramachandra R, Nagarajan N, Ramakrishnan J and Gopal E S R 1973Proc. Nucl. Phys. Solid State Phys. Symp. 15C 331
Rice O K and Chang D R 1972Phys. Rev. 5A 1419
Scott R L 1972Ber. Bunsenges Phys. Chem. 76 296
Sherman R H 1965Phys. Rev. Lett. 15 141
Srinivasan C 1968Proc. Nucl. Phys. Solid State Phys. Symp. 10B 382
Stanley H E 1971Introduction to phase transitions and critical phenomena (Clarendon Press, Oxford) chap 9
Swift J 1968Phys. Rev. 173 257
Timmermans J and Roland H 1932J. Chim. Phys. 29 529
Viswanathan B, Gambhir R D and Gopal E S R 1970J. Chem. Phys. 53 4405
Wertheim G K 1967J. Appl. Phys. 38 971
Widom B and Rowlinson J S 1970J. Chem. Phys. 52 1670
Widom B and Stillinger F H 1973J. Chem. Phys. 58 616
Wims A M, McIntyre D and Hynne F 1969J. Chem. Phys. 50 616
Wold L E, Pruitt G L and Morrison G 1973J. Phys. Chem. 77 1572
Zollweg J A and Mulholland G W 1972J. Chem. Phys. 57 1021
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gopal, E.S.R., Ramachandra, R. & Sekhar, P.C. Coexistence curve and rectilinear diameter in the critical liquid system carbon disulphide+nitromethane. Pramana - J Phys 1, 260–268 (1973). https://doi.org/10.1007/BF02848503
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02848503