Nitrogen oxides undergo many interesting reactions in the environment and in ind

Question

Nitrogen oxides undergo many interesting reactions in the environment and in industry. Given the following information, calculate H for the overall equation: 2 NO2(g) + 1/2 O2(g) N2O5(s). N2O5(s) 2 NO(g) + 3/2 O2(g), H = 223.7 kJ NO(g) + 1/2 O2(g) NO2(g), H = -57.1 kJ DeltaH = _______ kJ

Explanation / Answer

N2O5(s)---------------------> 2 NO(g) + 3/2 O2(g), deltaH = 223.7 kJ NO2(g)---------------------> NO(g) + 1/2 O2(g), delataH = 57.1 kJ ******************** ==>2 NO(g) + 3/2 O2(g)===========>N2O5(S), deltaH = -223.7 kJ ==>2NO2(g)=================> 2NO(g) + O2(g), delataH = 114.2 kJ ____________________________________________________________ 2 NO2(g) + 1/2 O2(g)============> N2O5(s). ==> delta H=-223.7+114.2=-109.5KJ

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