GKFix MCQ Question

What is the ∆rH⁰ for the reaction CO(g) + ½O₂(g) → CO₂(g)?

• A. –393.5 kJ mol⁻¹
• B. –285.83 kJ mol⁻¹
• C. –283.0 kJ mol⁻¹
• D. +283.0 kJ mol⁻¹