500 " mL of " a solution contains 2.65 g of `Na_2CO_3` and 4 g of `NaOH`. 20 " mL of " this solution titrated each time against `(N)/(10)H_2SO_4`. Find out the titre value if (a). Methyl orange is taken as an indicator
(b). Phenolphthalein is taken as indicator.

A solution contains 10mL of 0.1N NaOH and 10mL of 0.05Na_(2)SO_(4), pH of this solution is

A solution contains 10mL of 0.1N NaOH and 10mL of 0.05Na_(2)SO_(4), pH of this solution is

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?

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?