GKFix MCQ Question

For the reaction Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l), what is the standard reaction enthalpy?

• A. +33.3 kJ mol⁻¹
• B. –16.6 kJ mol⁻¹
• C. –857.5 kJ mol⁻¹
• D. –33.3 kJ mol⁻¹