Abstract
A VERY striking lecture experiment, which I have never seen performed or described, and which illustrates the reaction, by double elective affinity, of dry solids, is the trituration together in a mortar of corrosive sublimate and iodide of potassium. The result is a brilliant scarlet coloration of iodide of mercury. If a large crystal of the one is rubbed on a crystal of the other, a scarlet precipitate (if the word may be so applied) is formed at every point of contact. From the brilliancy of the colour the experiment may be readily seen by a large number of spectators.
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CLIFFORD, L. Physico-chemical Lecture Experiments. Nature 26, 126 (1882). https://doi.org/10.1038/026126e0
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DOI: https://doi.org/10.1038/026126e0
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