25.

Calculate the standard enthalpy change for the following chemical equation.

4FeO (s) + O2 (g) →   2Fe2O3 (s)

Use the following thermochemical equations to solve for the change in enthalpy.

Fe (s) + ½ O2 (g) → FeO (s)                   ΔH =-269 kJ/mol

2Fe (s) + 3/2O2 (g) → Fe2O3 (s)                   ΔH= -825 kJ/mol

-2726 kJ/mol

556 kJ/mol

-556 kJ/mol

574 kJ/mol

-574 kJ/mol