Whether purging of nitrogen gas is required or not, during the acid-base titration of unknown samples using potentiometric titration method ?
In acid-base titration purging of nitrogen gas in not necessary
https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Book%3A_Analytical_Chemistry_2.0_(Harvey)/09_Titrimetric_Methods/9.2%3A_Acid%E2%80%93Base_Titrations
If it's carbonate titrated with a strong acid, the classical technique is to titrate, boil out the CO2 and complete the titration. So horses for courses ....
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or we can collaborate
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