Abstract
ABOUT 50 grams of heavy water supplied by the Norsk Hydro-Elektrisk Kvaelstofaktieselskab as 99·2 per cent pure has been used in the present investigation. The refractive index of the sample has been found to be 1·3278 for the D line at 30° C., which may be compared with 1·3276 given by Luten1 under the same conditions. Using a piezometer made of soda glass and similar in construction to that employed by Tyrer2 and recently by Dakshinamurti3, the adiabatic compressibilities of heavy and ordinary water are determined. Tyrer's value for ordinary water is also given below for comparison. The specific volume, its variation with temperature and the specific heat in each case are taken from the existing literature and used for calculating the isothermal compressibility with the help of the well-known thermodynamical equation. Small variations in these do not appreciably affect the result, and hence the degree of accuracy with which they have been determined is of little consequence.
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References
Phys. Rev., 45, 161 (1934).
J. Chem. Soc., 105, 2534 (1914).
Proc. Ind. Acad. Sci., 5, 385 (1937).
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BHAGAVANTAM, S., RAO, B. Adiabatic and Isothermal Compressibilities of Heavy Water. Nature 140, 1099 (1937). https://doi.org/10.1038/1401099b0
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DOI: https://doi.org/10.1038/1401099b0
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