1. Tardigrade
  2. Question
  3. Chemistry
  4. In alkaline medium, thiosulphate ions are oxidised to sulphate ions by MnO4- ions. The oxidation number of Mn decreases by units.

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. In alkaline medium, thiosulphate ions are oxidised to sulphate ions by $MnO_{4}^{-}$ ions. The oxidation number of $Mn$ decreases by ______ units.

NTA AbhyasNTA Abhyas 2022

Solution:

In alkaline medium,
$\underset{(+7)}{MnO_{4}^{-}} \rightarrow \underset{(+4)}{MnO_{2}}$
The oxidation number of $Mn$ decreases by $3$ units.