Abstract : KMnO4 is a potent oxidizer in acidic environments. Under suitable storage conditions, it can hold its concentration for an extended period. In addition to being a self-indicator, its small excess provides the solution a distinctive pink colour.
HCl cannot be substituted for H2SO4 due to its rapid oxidation to chlorine in the presence of permanganate.
Nitric acid is stronger than KMnO4.
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Cite : Kumawat, M. K., & Tewatia, S. (2022). Preparation Of Standard Solution And Standardization Of Potassium Permanganate (1st ed., p. 38). Noble Science Press. https://doi.org/10.52458/9789391842611.nsp2022.eb.asu.ch08
