40 mL of 0.05 M Na_(2)CO_(3). NaHCO_(3). 2H_(2)O (sesquicarbonate ) is titrated against 0.05 M HCl. X and of HCl is used when phenolphthalein is the indicator in two separate titrations , hence (y-x) is :

40 mL of 0.05 M Na_(2)CO_(3). NaHCO_(3). 2H_(2)O (sesquicarbonate ) is

1.	40 mL of 0.05 M Na_(2)CO_(3). NaHCO_(3). 2H_(2)O (sesquicarbonate ) is titrated against 0.05 M HCl. X and of HCl is used when phenolphthalein is the indicator in two separate titrations , hence (y-x) is :
Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/80-337972" style="font-weight:bold;" target="_blank" title="Click to know more about 80">80</a> mL<br/>30 mL<br/>120 mL<br/>none of these</p>Solution :N//A</body></html>