titration completion pH = 8.31
NaHCO3+ HCl→NaCl + H2O+CO2
titration completion pH = 3.84
Indicator transition intervals:
phenolphthalein 8.2 - 10.0
when titrating the mixture in the presence of phenolphthalein, only Na2CO3 interacts with a solution of hydrochloric acid
This amount of Na2CO3 is present in 25 mL of mixture.
This amount present in one litre of mixture