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In the titration of mohr salt against $\mathrm{KMnO}_{4}$, the indicator used is
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$\mathrm{KMnO}_{4}$
In the titration of Mohr's salt with $\mathrm{KMnO}_{4}$, the indicator used is $\mathrm{KMnO}_{4}$ itself. Because $\mathrm{KMnO}_{4}$ is very intense purple in colour. When, the solution changes to pink, end point is noted.
$\underset{\text { Dark purple }}{\mathrm{MnO}_{4}^{-}} \stackrel{\text { Reduction with }}{\stackrel{\text { Mohr's salt }}{\longrightarrow}} \underset{\text { Pink }}{\mathrm{Mn}^{2+}}$
$\underset{\text { Dark purple }}{\mathrm{MnO}_{4}^{-}} \stackrel{\text { Reduction with }}{\stackrel{\text { Mohr's salt }}{\longrightarrow}} \underset{\text { Pink }}{\mathrm{Mn}^{2+}}$
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