Abstract
The densities of mixtures ofN-methylformamide (NMF) and water (W) have been measured at 5, 15, 25, 35, and 45°C, and the heat capacities of the same system at 25°C, both over the whole mole-fraction range. From the experimental data the apparent molar volumes (Φv) and heat capacities (Φc) of NMF and of water are evaluated. The relatively small difference between the partial molar volumes or heat capacities at infinite dilution and the corresponding molar volumes or heat capacities of the pure liquids for both NMF and water suggests that with regard to these quantities replacement of a NMF molecule by a water molecule or vice versa produces no drastic changes. The partial molar volume of water at infinite dilution in NMF is smaller than the molar volume of pure water, but the corresponding partial molar heat capacity is unexpectedly high.
Similar content being viewed by others
References
C. de Visser, G. Perron, J. E. Desnoyers, W. J. M. Heuvelsland, and G. Somsen,J. Chem. Eng. Data 22, 74 (1977).
P. Picker, P. A. Leduc, P. R. Philip, and J. E. Desnoyers,J. Chem. Thermodyn. 3, 631 (1971).
J. E. Desnoyers, C. de Visser, G. Perron, and P. Picker,J. Solution Chem. 5, 605 (1976).
C. de Visser, G. Perron, and J. E. Desnoyers,Can. J. Chem. 55, 856 (1977).
P. Picker, E. Tremblay, and C. Jolicoeur,J. Solution Chem. 3, 377 (1974).
G. S. Kell,J. Chem. Eng. Data 12, 66 (1967).
G. Perron, J.-L. Fortier, and J. E. Desnoyers,J. Chem. Thermodyn. 7, 4922 (1975).
F. Millero, inWater and Aqueous Solutions: Structure, Thermodynamics and Transport Processes, R. A. Horne, ed. (Wiley-Interscience, New York, 1972), Chap. 13.
W. J. M. Heuvelsland and G. Somsen,J. Chem. Thermodyn. 9, 231 (1977).
C. de Visser and G. Somsen,Z. Phys. Chem. (N.F.) 92, 159 (1974).
J. C. Verhoef and E. Barendrecht,J. Electroanal. Chem. 71, 305 (1976).
H. L. Friedman and C. V. Krishnan,J. Solution Chem. 2, 2460 (1973).
F. Franks, M. Pedley, and D. S. Reid,J. Chem. Soc. Faraday Trans. 1 72, 359 (1976).
M. Y. Schrier, P. J. Turner, and E. E. Schrier,J. Phys. Chem. 79, 1391 (1975).
J. E. Desnoyers, G. Perron, L. Avédikian, and J. P. Morel,J. Solution Chem. 5, 631 (1976).
O. Kiyohara, G. Perron, and J. E. Desnoyers,Can. J. Chem. 53, 3263 (1975).
G. Perron, N. Desrosiers, and J. E. Desnoyers,Can. J. Chem. 54, 2163 (1976).
J. Y. Gal and F. Persin,C. R. Acad. Sci. Paris 282, 1025 (1976).
J. E. Desnoyers and C. Jolicoeur, inModern Aspects of Electrochemistry, J. O'M. Bockris and B. E. Conway, eds. (Plenum Press, New York, 1969), Vol. 5, p. 1.
F. J. Millero, G. K. Ward, F. K. Lepple, and E. V. Hoff,J. Phys. Chem. 78, 1636 (1974).
C. de Visser and G. Somsen, inThermodynamic Behaviour of Electrolytes in Mixed Solvents, W. F. Furter, ed., Advances in Chemistry Series, No. 155 (1976), Chap. 17.
O. D. Bonner and P. J. Cerutti,J. Chem. Thermodyn. 8 105 (1976).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
de Visser, C., Pel, P. & Somsen, G. Volumes and heat capacities of water andN-methylformamide in mixtures of these solvents. J Solution Chem 6, 571–580 (1977). https://doi.org/10.1007/BF00655371
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00655371