During the titration of a mixture ofNaOH , Na_2CO_3and inert substance

1.	During the titration of a mixture ofNaOH , Na_2CO_3and inert substances against HCl
Answer» Phenolphthalein can be USED to detect to detect the end point when half equivalent of `Na_2CO_3 ` and full equivalent NaOH is consumed (first end point) Phenolphthalein can be used to detect the second end point Methyl orange can be used to detect the FINAL end point Methyl orange can be used to detect the first end point SOLUTION :Phenolphthalein cannot be used for WEAKBASE TITRATION hence cannot detect `NaHCO_3`end point. Methyl arange can be used and can onlydetect final end point.

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