Phenolphthalein is not a good indicator for t | vedclass

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Question

(B) Phenolphthalein is an acid-base indicator used to detect the equivalence point in acid-base titrations. $FeSO_4 \, vs. \, KMnO_4$ is a redox titra

Vedclass · Accepted Answer

$FeSO_4 \, vs. \, KMnO_4$

Vedclass · Answer

(B) Phenolphthalein is an acid-base indicator used to detect the equivalence point in acid-base titrations. $FeSO_4 \, vs. \, KMnO_4$ is a redox titration,not an acid-base titration. In a redox titration,the change in potential is monitored,and phenolphthalein does not change color based on the oxidation-reduction state of the reactants. Therefore,it is not a suitable indicator for this reaction.

Phenolphthalein is not a good indicator for titrating :-

Similar Questions

Phenolphthalein is a suitable indicator for the titration of:

Which indicator is suitable for the titration of $NaOH$ and oxalic acid?

If we use phenolphthalein as an indicator in a titration of $Na_2CO_3$ with $HCl$,the usual result is:

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If a very small amount of $HPh$ (phenolphthalein) is added to a $0.1 \ M$ aqueous solution of $CH_3COONa$,the fraction of the indicator that exists in the colourless form is:
$[K_b(CH_3COO^{-}) = 10^{-9}, pK_a(HPh) = 9.6, \log 2 = 0.3]$

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