Question

The following two reactions are known:
N2(g) + O2(g)‡2NO(g) ΔH = +180.50 kJ 2NO2(g) ‡ N2(g) + 2O2(g) ΔH = −66.36 kJ Determine the ΔH value for the reaction:
2NO(g) + O2(g)‡2NO2(g)

Answer 1

+290 kJ

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