STANDARDChemistry-Inorganic Chemistry
STANDARD Chemistry Oxidation States of Transition Metals MCQ Question
Type: MCQ-conceptual-Medium
When MnO₂ is fused with KOH and O₂, what is the product formed and its colour? MnO₂ + KOH + O₂ → H₂O
A
MnO-colourless
B
KMnO₄-purple
C
K₂MnO₄-dark green
D
MnO₃-black
Correct Answer
Option C
Detailed Explanation
The fusion of MnO₂ with KOH and O₂ forms K₂MnO₄, which is dark green. This reaction involves the oxidation of MnO₂ to a higher oxidation state in an alkaline medium.
Found an issue with this question?