Phenolphthalein does not act as an indicator | vedclass

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(B) Phenolphthalein is an acid-base indicator that changes color in the $pH$ range of $8.2$ to $10.0$. It is suitable for titrations involving strong

Vedclass · Accepted Answer

$H_2C_2O_4$ and $KMnO_4$

Vedclass · Answer

(B) Phenolphthalein is an acid-base indicator that changes color in the $pH$ range of $8.2$ to $10.0$. It is suitable for titrations involving strong bases and weak acids or strong bases and strong acids. Option $B$ involves a redox titration between oxalic acid $(H_2C_2O_4)$ and potassium permanganate $(KMnO_4)$,where $KMnO_4$ acts as a self-indicator. Therefore,phenolphthalein is not used as an indicator for this reaction.

Phenolphthalein does not act as an indicator for the titration between

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