Problem: Find ΔHrxn for the following reaction: N2O(g) + NO2(g) → 3 NO(g)Use the following reactions with known ΔH values:2 NO(g) + O2(g) → 2 NO2(g); ΔH = –113.1 kJN2(g) + O2(g) → 2 NO(g); ΔH = +182.6 kJ2 N2O(g) → 2 N2(g) + O2(g); ΔH = –163.2 kJ

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FREE Expert Solution
FREE Expert Solution

Reaction 1 

invert and multiply coefficient by 1/2

NO2(g)  NO(g) + ½ O2(g) ΔH = 56.55 kJ



Reaction 2


N2(g) + O2(g)  2 NO(g); ΔH = +182.6 kJ


Reaction 3


multiply coefficient by ½


N2O(g)  N2(g) + 1/2 O2(g); ΔH = – 81.6 kJ


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Problem Details

Find ΔHrxn for the following reaction: N2O(g) + NO2(g) → 3 NO(g)

Use the following reactions with known ΔH values:
2 NO(g) + O2(g) → 2 NO2(g); ΔH = –113.1 kJ

N2(g) + O2(g) → 2 NO(g); ΔH = +182.6 kJ

2 N2O(g) → 2 N2(g) + O2(g); ΔH = –163.2 kJ