1. Tardigrade
  2. Question
  3. Chemistry
  4. In oxidation of oxalic acid by KMnO4, the colour of KMnO4 disappears slowly at the start of reaction but disappears very fast afterwards. This is an example of

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. In oxidation of oxalic acid by KMn$O_{4}$, the colour of KMn$O_{4}$ disappears slowly at the start of reaction but disappears very fast afterwards. This is an example of

Surface Chemistry

Solution:

In the oxidation of oxalic acid by KMn$O_{4},$ the colour of KMn$O_{4}$ disappears slowly in the beginning but disappears faster after sometime due to the formation of $Mn^{2+}$ ions which act as auto-catalyst for the reaction.