The Influence of Copper On the Rate of Solution of Iron in Acids
The Influence of Copper On the Rate of Solution of Iron in Acids
Frederick Keller Bell
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6 PURE REDUCED IRON REDUCED IR FIG. 9 PURE REDUCED IRON IN CONTAC^TH^ILVER eroded between the crystal ;. ( hi the other hand, in the case of the copper alloys or in the case of the copper band around the pure iron, a greatly diminished erosion is indicated bv the photographs. It was thought advisable to determine the agreement between the total hydrogen evolved and the iron content in the acid solution at the end of an experiment. For this purpose the solutions from Expts. 11, 12. 13 and 14 wer...e analyzed. The following method of analysis was used. The solution strong in hydrochloric acid was evaporated with sulfuric acid until fumes of sulfur trioxide were evolved. The residue was diluted with water and then titrated with permanganate. The ferric iron thus obtained was titrated with titaniu 11 trichloride, using ammonium thiocy- anate as an indicator. All of the results thus obtained were consistently higher than the corresponding hydrogen volume values. An explanation TLATE8 I to . -.
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