GKFix MCQ Question

What is the enthalpy change for the reaction: 2C(graphite,s) + O2(g) → 2CO(g)?

• A. +221.0 kJ mol⁻¹
• B. –221.0 kJ mol⁻¹
• C. +110.5 kJ mol⁻¹
• D. –110.5 kJ mol⁻¹