GKFix MCQ Question

What is the enthalpy change for the reaction: CO₂(g) → C(graphite) + O₂(g)?

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