GKFix MCQ Question

What is the standard enthalpy change for the reaction: ½Fe2O3(s) + ³⁄₂H2(g) → Fe(s) + ³⁄₂H2O(l)?

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