7. Energy, Rate and Equilibrium
Endothermic & Exothermic Reactions
At 25.0 °C, the ΔH and K for the conversion of dinitrogen tetroxide to nitrogen dioxide are +13.68 kcal/mol (+57.24 kJ/mol) and 0.9989, respectively.
N2O4(g) ⇌ 2 NO2(g)
Is the reaction endothermic or exothermic?