Relation of voltage of dry cells to hydrogen-ion concentration
Book details
- Title
- Relation of voltage of dry cells to hydrogen-ion concentration
- Publication year listed
- 1919
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
Relation of voltage of dry cells to hydrogen-ion concentration
Year: 1919
It is pointed out that according to Nernst's equation the potential of the manganese peroxide electrode should be a logarithmic function of the hydrogen-ion concentration. Experiments were therefore made on manganese peroxide electrodes, using various kinds of ore, and their potential was measured in ammonium chloride solution with various hydrogen-ion concentrations. It was found that the law held in the case of mixtures of graphite and some manganese ores, but that the potential of similar electrodes containing a chemically prepared oxide was independent of the hydrogen-ion concentration. The potential of the natural ores steadily decreased with time in acid solution and slowly increased in alkaline solutions. Slight variations in the hydrogen-ion concentrations of ammonium