Write the balanced overall equation for the followingprocess (equation 3) and calculate ∆HoveralI.

(1) N2 (g) + O2(g) → 2NO(g) (2) 2NO(g) + O2(g) → 2NO2(g) (3)

∆H = 180.6 kJ ∆H = – 114.2 kJ

∆H overall=?