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During the titration of a mixture of Na...

During the titration of a mixture of ` NaOH , Na_2CO_3 ` and inert substances against HCl

A

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)

B

Phenolphthalein can be used to detect the second end point

C

Methyl orange can be used to detect the final end point

D

Methyl orange can be used to detect the first end point

Text Solution

Verified by Experts

The correct Answer is:
A, C
Phenolphthalein cannot be used for weak base titration hence cannot detect `NaHCO_3` end point. Methyl arange can be used and can only detect final end point.
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