GKFix MCQ Question

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

• A. –393.5 kJ mol⁻¹
• B. +393.5 kJ mol⁻¹
• C. +787.0 kJ mol⁻¹
• D. –787.0 kJ mol⁻¹