【单选题】有关 CO 2 (g) 的标准摩尔生成焓 Δ f H m θ ( CO 2 , g ) 有以下说法,其中正确的是 ( ) 1 C( 金刚石 )+O 2 (g) → CO 2 (g) Δ r H m θ = Δ f H m θ ( CO 2 , g ) 2 CO(g)+0.5 O 2 (g) → CO 2 (g) Δ r H m θ = Δ f H m θ...
【单选题】已知298K时, 2NH 3 (g)→N 2 (g)+3H 2 (g)Δ r H m =92.2kJ.mol -1 H 2 (g)+1/2O 2 (g)→H 2 O(g)Δ r H m =-241.8kJ.mol -1 4NH 3 (g)+O 2 (g)→4NO(g)+6H2O(g)Δ r H m =-905.5kJ.mol -1 则NO(g)的Δ f H m 等于:()