GKFix MCQ Question

What is the enthalpy change for the reaction: 1/2 N₂(g) + O₂(g) → NO₂(g)?

• A. +33.2 kJ mol⁻¹
• B. –33.2 kJ mol⁻¹
• C. +16.6 kJ mol⁻¹
• D. –16.6 kJ mol⁻¹