题目

NH3(g)燃烧的产物是NO2(g)和H2O(g)。已知反应有： (1)H2(g)＋O2(g)===H2O(g)   ΔH＝－241.8 kJ·mol－1 (2)N2(g)＋O2(g)===NO2(g)ΔH＝＋33.9 kJ·mol－1 (3)NH3(g)===N2(g)＋H2(g)  ΔH＝＋46.0 kJ·mol－1 下列关于NH3(g)燃烧的热化学方程式的书写正确的是( ) A．NH3(g)＋O2(g)===NO2(g)＋H2O(g)   ΔH＝－282.8 kJ·mol－1 B．NH3(g)＋O2(g)===NO2(g)＋H2O(g)   ΔH＝－161.9 kJ·mol－1 C．NH3(g)＋O2(g)===NO2(g)＋H2O(g)   ΔH＝－161.9 kJ·mol－1 D．NH3(g)＋O2(g)===NO2(g)＋H2O(g)   ΔH＝－282.8 kJ·mol－1log2（23×45）=________．