Indicator for the titration of HCl and Na_2CO | vedclass

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(D) The titration of $Na_2CO_3$ (a weak base) with $HCl$ (a strong acid) involves the formation of $NaHCO_3$ and then $NaCl$. Methyl orange is the sui

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Methyl orange

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(D) The titration of $Na_2CO_3$ (a weak base) with $HCl$ (a strong acid) involves the formation of $NaHCO_3$ and then $NaCl$. Methyl orange is the suitable indicator for this titration because its $pH$ range $(3.1-4.4)$ corresponds to the $pH$ at the equivalence point of the reaction between a strong acid and a weak base.

Indicator for the titration of $HCl$ and $Na_2CO_3$ would be

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