Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-diagram based-Medium-Class 11
Consider an enthalpy diagram showing the reaction 1/2 N2(g) + O2(g) → NO2(g). Which of the following best describes the nature of this reaction based on the diagram?
A
Endothermic reaction with a positive enthalpy change.
B
Exothermic reaction with a negative enthalpy change.
C
Endothermic reaction with a negative enthalpy change.
D
Exothermic reaction with a positive enthalpy change.
Correct Answer
Option A
Detailed Explanation
The reaction 1/2 N2(g) + O2(g) → NO2(g) has an enthalpy change (∆rH ) of +33.2 kJ mol–1, indicating it is endothermic with a positive enthalpy change.
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