Question

Why Does KMnO4 Act As Self-Indicator?​​

Answer 1

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KMnO4 solutions are dark purple. When used as a titrant, as soon as the endpoint is reached and the KMnO4- is in excess, the solution has a permanent pink hue (provided that the solution is initially colorless). Thus KMnO4 acts as its own indicator.

Answer 2

KMnO4 acts as a self – indicator. KMnO4 solutions are dark purple in colour. It is due to +7 oxidation state of Manganese (Mn). ... KMnO4 is usually titrated against solutions like Ferrous Ammonium Sulphate ((NH4)2Fe(SO4)2(H2O)6) and Oxalic acid (C2H2O4) which are acidic in nature.

Hope it helps uh ✔