Does anyone know how to correctly determine the contents of each component in a mixture containing NaOH, Na2CO3, and Na3PO4?
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A mixed solution contains various components such as NaOH, Na2CO3, and Na3PO4; when tested using conventional methods, the concentrations of these three components can exceed 100% together, resulting in significant errors in the test results. Is there anyone here who can provide a good testing method to accurately determine the respective contents?
Sodium phosphate can be determined first using the phosphomolybdenum quinoline gravimetric method, while NaOH and Na2CO3 can be determined by potentiometric titration with acid; relevant calculations are then carried out based on the titration jump curve. The first titration is generally to sodium chloride, disodium hydrogen phosphate, and sodium bicarbonate, while the second titration is to sodium chloride and disodium hydrogen phosphate. Calculated based on the stoichiometric ratio of the titration process.