GKFix MCQ Question

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

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