The standard enthalpy of formation of H20(l) and Fe2O3 (s) are respectively -286 kJ/mol and -824 kJ/mol

Question

 What is the standard enthalpy change for the following reaction?

Fe₂O₃(s) +3H₂(g)------------→3H₂O(l) +2Fe(s)

• -538 kJ mol^-1
• -102 kJ mol^-1
• -34 kJ mol^-1
• 34 kJ mol^-1
• 538 kJ mol^-1