Abstract

The present paper reports the potentiometric titration of four acids, NaPO 3, Na 4P 2O 7, NaH 2PO 4 and K 2HPO 4, and their mixtures with K 2CO 3 and Na 2O 2 as titrants in molten KNO 3 at 350°C, using the Ta/Ta 2O 5 electrode as an indicator electrode.

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