Abstract
HONIGSCHMID and Goubeau in 1928 described experiments on the analysis of potassium chloride and bromide leading to an atomic weight of potassium of 39-104, which agrees with a value found by Richards and Archibald in 1903, but is nearly 0-01 unit higher than the value, 39-096, obtained in 1907 by Richards and Staehler and by Richards and Mueller. Since the discrepancy is much greater than the apparent experimental error of the comparatively simple analytical operations involved, a redetermination was desirable. Zintl and Goubeau in 1927 confirmed the higher value by the conversion of potassium nitrate into the chloride. The ratio determined from the weights in air corrected to vacuum, however, and that determined from the weights of material actually weighed in vacuum, fall on opposite sides of the value to be expected from the results of Richards, Staehler and Mueller (N=14-008).
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Atomic Weights of Potassium and Carbon. Nature 132, 790–791 (1933). https://doi.org/10.1038/132790b0
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DOI: https://doi.org/10.1038/132790b0