GKFix MCQ Question

What is the standard enthalpy change for the reaction: Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)?

• A. +33.3 kJ mol⁻¹
• B. –33.3 kJ mol⁻¹
• C. –16.6 kJ mol⁻¹
• D. +16.6 kJ mol⁻¹