Abstract
FORMAMIDE is a very good solvent for many strong and medium weak acids. In order to determine their dissociation constants accurately by potentiometric measurements it is necessary to know the standard potential of a reference electrode with respect to the normal hydrogen electrode. Until recently, only the value of the cadmium–cadmium chloride electrode has been given in the literature1. We have been able to determine the standard potential of the silver–silver chloride electrode by the classical method using the following cell without liquid–liquid junction : Pt, H2/HCl(HCONH2)/AgCl, Ag Platinum electrodes were prepared according to Jones2 and the silver–silver chloride electrodes by the electrolytic method3,4. (Both types of electrodes were reproducible within 0.5 mV.)
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MANDEL, M., DECROLY, P. Standard Potential at 25° C. of the Silver–Silver Chloride Electrode in Formamide. Nature 182, 794–795 (1958). https://doi.org/10.1038/182794a0
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DOI: https://doi.org/10.1038/182794a0
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