Chemistry-Balancing Redox Reactions
NEET Chemistry Balancing Redox Reactions MCQ Question
Type: MCQ-diagram based-Easy-Class 11
Consider a diagram showing the half-reaction of iodide ions converting into iodine and the half-reaction of permanganate ions converting into manganese dioxide. Which of the following represents the correct balanced equation for the combined redox reaction using the half-reactions given?
A
6I⁻ (aq) + 2MnO₄⁻ (aq) + 4H₂O(l) → 3I₂ (s) + 2MnO₂ (s) + 8OH⁻ (aq)
B
3I⁻ (aq) + MnO₄⁻ (aq) + 2H₂O(l) → 1.5I₂ (s) + MnO₂ (s) + 4OH⁻ (aq)
C
2I⁻ (aq) + MnO₄⁻ (aq) + 2H₂O(l) → I₂ (s) + MnO₂ (s) + 4OH⁻ (aq)
D
4I⁻ (aq) + 2MnO₄⁻ (aq) + 3H₂O(l) → 2I₂ (s) + 2MnO₂ (s) + 6OH⁻ (aq)
Correct Answer
Option A
Detailed Explanation
The correct balanced redox reaction is obtained by balancing both the atoms and charges using the half-reaction method, as shown in the NCERT context.
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