Answer to Question #68997 in General Chemistry for victoria

Question

3. A scientist measures the standard enthalpy change for the following reaction to be 200.8 kJ :
Fe3O4(s) + 4 H2(g)3Fe(s) + 4 H2O(g)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of Fe3O4(s) is ____ kJ/mol.

4. A scientist measures the standard enthalpy change for the following reaction to be -908.0 kJ:
2NH3(g) + 3 N2O(g)4N2(g) + 3 H2O(g)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of H2O(g) is _____ kJ/mol.

Answer 1

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