GKFix MCQ Question

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

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