Article
Publicly Available
Molality-Based Primary Standards of Electrolytic Conductivity (IUPAC Technical Report)
Published/Copyright:
September 1, 2009
Highlights from Pure and Applied Chemistry
Molality-Based Primary Standards of Electrolytic Conductivity (IUPAC Technical Report)
by K. W. Pratt, W.F. Koch, Y. C. Wu, and P. A. Berezansky
Pure and Applied Chemistry, Vol. 73, No. 11, pp. 1783–1793 (2001).
New values of electrolytic conductivity were determined for aqueous KCl solutions with molalities of 0.01, 0.1, and 1.0 mol/kg in the temperature range 0 to 50°C, at 5 K intervals. Expanded uncertainties, 2uc, were also calculated in accordance with the presently accepted protocol for the treatment of uncertainty. The new conductivity values are recommended as primary standards of electrolytic conductivity based on molality. They replace the previous values, based on the nonstandard demal scale, which were determined only at 0, 18, and 25°C. The accuracy of the technique used was evaluated by repeating the determination of the previously recommended demal-based IUPAC standards of electrolytic conductivity and through comparison with other absolute measurements.
Published Online: 2009-09-01
Published in Print: 2002-05
© 2014 by Walter de Gruyter GmbH & Co.
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- The World Chemistry Congress 2001 and the Young Scientist Awards
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