Systematic pH Values of Some Solutions in the Alkaline Range
- 1 January 1935
- journal article
- Published by The Electrochemical Society in Transactions of The Electrochemical Society
- Vol. 67 (1) , 81-100
- https://doi.org/10.1149/1.3493859
Abstract
This paper presents a systematic study of the pH values of solutions of the sodium salts of phosphoric, boric, and carbonic acids and sodium hydroxide. The results cover a wide variation of concentration at 30° C. Some typical solutions of the various systems were studied at 60° C. to indicate the change of pH with temperature. Except in the case of boric acid, the pH values are all lower at 60° C. than they are at 30° C. The pH of solutions of both disodium phosphate and sodium bicarbonate decreases with an increase of concentration, for 0.05 M up to 0.5 M. There is a maximum for both in lower concentrations as the dilution approaches pure water (pH = 7).Keywords
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