Reaction 1:N2O4(g)→2NO2(g) ΔH1=+57.9kJ
Reaction 2:2NO(g)+O2(g)→2NO2(g) ΔH2=−113.1kJ
Based on the information for two different reactions given above, which of the following gives the quantities needed to calculate the enthalpy change for the reaction represented by the overall equation below?
2NO(g)+O2(g)→N2O4(g)
A. ΔH1+ΔH2
B. ΔH1+(−ΔH2)
C. (−ΔH1)+ΔH2
D. ΔH1+(2×ΔH2)