Specific heats of aqueous solutions of NaCl,NaBr, and KCl: Comparisons with related thermal properties |
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| Authors: | J E Tanner F W Lamb |
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| Institution: | (1) Indiana University, Bloomington, Indiana;(2) Present address: Applied Sciences Department, Naval Weapons Support Center, 47522 Crane, Indiana;(3) Northwestern University, Evanston, Illinois;(4) Present address: Lockheed Missiles and Space Company, Inc., P.O. Box 504, 94088 Sunnyvale, California |
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| Abstract: | Earlier unpublished measurements of the specific heat capacities of aqueous NaCl, KCl, and NaBr solutions from 5 to 85°C and from 0.05m to saturation are presented. A twin calorimeter was used. A precision of nearly 1 part in 104 in the specific heat capacity is claimed. The results are compared with literature values (summaries or original data) for heat capacity, heat of dilution, and activity coefficient of these salts in solution by means of a polynomial in half-integer powers of molality and temperature. It is found that our values agree well with the more recent literature values of the heat capacities. Small systematic inconsistencies between the various types of data were found.The experimental results presented here are taken from the postdoctoral work of Dr. F. W. Lamb, 1946–47, and from the master's thesis of Dr. J. E. Tanner, Indiana University (1954), obtainable from University Microfilms, Inc., Ann Arbor, Michigan, order number M-763. |
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| Keywords: | Aqueous solutions heat capacity potassium salts sodium salts |
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