The p H of distilled water, and the measurement of the hydrolysis of ammonium sulphate, nitrate, chloride, and acetate

Effect of the solubility of glass on the behavior of the glass electrode

“…As the acidity increases the amount of swelling in 48 hours at 80° C. is repressed. Similar voltage departures are reported for high concentrations of other acids [16] and, although the solubility tests have not been made, one can predic't with reasonable certainty from Donnan membrane considerations and the distribution law that repression of swelling will be exhibited in these cases also. Although the specimens exhibit less swelling in the high concentrations, it must be borne in mind that this diminished effect can be attributed to repression of the swelling of the gelatinous silica layer resulting from the change in osmosis, caused by increased concentration of electrolyte, or to a partial solution of that silica, or to a combination of both.…”