2N2O(g) 2N2 (g) + O2(g) = -163.2kJ ∆H3 (answer:+157.6kJ/mol) Calculate rxn for the reaction 3H2(g) + O3 (g) 3H2O(g) from the following ∆H information. 2H2(g) + O2(g) 2H2O(g) = -483.6kJ ∆H1 3O2 (g) 2O3 (g) = +285.4kJ (answer: -868.1kJ/mol) ∆H2 Use the standard reaction enthalpies given below to determine for the ΔH°rxn following reaction: 2 NO(g) + O2(g) 2 NO2(g) = ? ΔH°rxn Given: N2(g) + O2(g) 2 NO(g) = +183 kJ ΔH°rxn 1/2 N2(g) + O2(g) NO2(g) = +33 kJ ΔH°rxn (Answer: -117 kJ) Use the standard reaction enthalpies given below to determine for the ΔH°rxn following reaction: 4 SO3(g) 4 S(s) + 6 O2(g) = ? ΔH°rxn Given: SO2(g) S(s) + O2(g) = +296.8 kJ ΔH°rxn 2 SO2(g) + O2(g) 2 SO3(g) = -197.8 kJ ΔH°rxn Answer: 1583 kJ
2N2O(g) 2N2 (g) + O2(g) ∆H3 = -163.2kJ (answer:+157.6kJ/mol) Calculate ∆H rxn for the reaction 3H2(g) + O3 (g) 3H2O(g) from the following information. 2H2(g) + O2(g) 2H2O(g) ∆H1 = -483.6kJ 3O2 (g) 2O3 (g) ∆H2 = +285.4kJ (answer: -868.1kJ/mol) Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction: 2 NO(g) + O2(g) 2 NO2(g) ΔH°rxn = ? Given: N2(g) + O2(g) 2 NO(g) ΔH°rxn = +183 kJ 1/2 N2(g) + O2(g) NO2(g) ΔH°rxn = +33 kJ (Answer: -117 kJ) Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction: 4 SO3(g) 4 S(s) + 6 O2(g) ΔH°rxn = ? Given: SO2(g) S(s) + O2(g) ΔH°rxn = +296.8 kJ 2 SO2(g) + O2(g) 2 SO3(g) ΔH°rxn = -197.8 kJ Answer: 1583 kJ
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