Phenolphthalein does not act as an indicator | vedclass

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(D) Phenolphthalein is an acid-base indicator that changes color in the $pH$ range of $8.2$ to $10.0$. Titrations involving strong acids and strong ba

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Oxalic acid and $KMnO_4$

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(D) Phenolphthalein is an acid-base indicator that changes color in the $pH$ range of $8.2$ to $10.0$. Titrations involving strong acids and strong bases,or weak acids and strong bases,can be monitored using phenolphthalein. However,the titration between oxalic acid and $KMnO_4$ is a redox titration,not an acid-base titration. In this reaction,$KMnO_4$ acts as a self-indicator because it is purple in color and becomes colorless upon reduction to $Mn^{2+}$ ions in an acidic medium.

Phenolphthalein does not act as an indicator for the titration between

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