Which of the following chemical equations accurately

Last updated: 7/31/2022

Which of the following chemical equations accurately represents an exothermic reaction? a) 2 NO2(g)->N2(g) + 2O2(g) ΔH = +68 kJ b) 2 NH3(g) +92 kJ → N2(g) + 3 H2(g) c) 2 H₂O(g) → 2 H2(g) + O2(g) + 482 kJ d) 1/2 N2(g) + 1/2O2(g)->NO(g) ΔH = + 88 kJ