GKFix MCQ Question

What is the standard enthalpy change for the reaction: CO(g) + ½O2(g) → CO2(g)?

• A. +283.0 kJ mol⁻¹
• B. –283.0 kJ mol⁻¹
• C. +566.0 kJ mol⁻¹
• D. –566.0 kJ mol⁻¹