NEET Chemistry Balancing Redox Reactions MCQ Question
In the reaction 2NO2(g) + 2OH–(aq) → NO2–(aq) + NO3–(aq) + H2O(l), what is the change in the oxidation number of nitrogen in NO2 as it is converted to NO2– and NO3–?
0 to +3 and +5
+4 to +3 and +5
+3 to +3 and +5
+4 to +2 and +6
Correct Answer
Detailed Explanation
In the given reaction, NO2 is converted to NO2– and NO3–. The oxidation state of nitrogen in NO2 is +4. It changes to +3 in NO2– and +5 in NO3–, demonstrating both reduction and oxidation.
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