Abstract
WITOSAWSKI'S method1 for determining the normal boiling point of a substance by comparing its boiling point with that of water at three or more pressures, and applying his equation involving the ratio of the dt/dp coefficients of the two liquids, can be simplified by working as nearly as possible at a pressure of one normal atmosphere. If the manostat, which equalizes the pressures in the two ebullio-meters, can be adjusted previously to one normal atmosphere (as determined by the temperature of boiling of water in the barometric ebulliometer) the normal boiling point of the substance in the second ebulliometer can be measured directly.
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References
W. wi&ecedil;toslawski, J. chim. phys., 27, 496 (1930) ; Roczniki Chem., 9, 266 (1930).
W. wi&ecedil;toslawski, IX Cong. Intern. Quimica Pur a Aplicada, Madrid, 81 (1934); Roczniki Chem., 13, 176, 227 (1933): J. Phys. Chem., 38, 1169 (1934); Z. phys. Chem., A, 160, 257 (1932).
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WOJCIECHOWSKI, M. A Simplified Procedure for Determining Normal Boiling Points by the Comparative Method. Nature 138, 1096 (1936). https://doi.org/10.1038/1381096a0
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DOI: https://doi.org/10.1038/1381096a0
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