50 mL of a solution containing 1 g each of `Na_(2)CO_(3), NaHCO_(3)` and NaOH was titrated with N-HCl. What will be the titre reading when only phenolphalein is used as indicator?

50 " mL of " a solution containing 1 g each of Na_2CO_3 , NaHCO_3 and NaOH was titrated with N HCl. What will be the titre value if: (a). Only phenolphthalein is used as an indicator?

50 " mL of " a solution containing 1 g each of Na_2CO_3 , NaHCO_3 and NaOH was titrated with N HCl. What will be the titre value if: (a). Only phenolphthalein is used as an indicator? ltbr. (b). Only methyl orange is used as an indicator from the very begining? (c). Methyl orange is added after the first end point with phenolphthalein?