Publisher's Synopsis
Excerpt from The Electromotive Force of Metals in Cyanide Solutions
This series correctly shows the difference of potential in many solvents, especially in acid solutions, but the use of it for pre dicting the action of cyanide solutions involves several grave errors, one of which is the assumption that. The nature of the solution in which substances are placed is without effect on the order of the series.
The remarkable effect of solutions of cyanide of potassium upon the relative positions of substances in the electro-chemical series was first shown by Prof. Jacoby, who, on August 21, 1844, called the attention of the St. Petersburg Academy of Sciences to the fact that when silver and cyanide of potassium solution replace the zinc and sulphuric acid in the Daniel] cell, a strong current ensues and copper is precipitated. Ordinarily, and according to the usual inference from the above series, cop per precipitates silver from its solutions; but here was a com bination in which silver precipitated copper.
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