有助于反应3O2(g) →2O3(g), ΔH298θ=288.7KJ/mol正向进行的条件是( )
举一反三
- 已知反应3O2(g)= 2O3(g)的ΔrHm Ө= 288.7 kJ·mol-1。若使反应向右进行,需采取下列哪一种措施?
- 【单选题】由下列数据确定CH 4 (g)的为Δ f H m Θ 为 () C ( 石墨 ) +O 2 (g)=CO 2 (g) Δ r H m Θ =-393.5kJ·mol - 1 H 2 (g)+1/2O 2 (g)=H 2 O(l) Δ r H m Θ =-285.8kJ·mol - 1 CH 4 (g)+2O 2 (g)=CO 2 (g)+2H 2 O ( l ) Δ r H m Θ =-890.3kJ·mol - 1 A. 211 kJ·mol -1 B. -74.8kJ·mol - 1 C. 890.3 kJ·mol - 1 D. 缺条件,无法算
- 已知下面四个反应的△H°298,其中液态水的标准生成热是: A: 2H(g)+O(g)=H2O(g) △rHmθ298(1) B: H2(g)+1/2 O2(g)= H2O(1) △rHmθ298(2) C: H2(g)+1/2 O2(g)= H2O(g) △rHmθ298(3) D: H2(g)+ O(g)= H2O(1) △rHmθ298(4)
- 已知反应3O2(g)=2O3(g)的ΔrHmӨ=288.7kJ·mol-1。若使反应向右进行,需采取下列哪一种措施?
- 已知H2O(g) = H2(g) +0.5O2(g),ΔrHm(1) = 241.8 kJ·mol–1;H2(g) = 2H(g),ΔHm(2) = 436.0 kJ·mol–1;0.5O2(g) = O(g),ΔHm(3)=247.7 kJ·mol–1则H2O中H–O键的平均键焓(单位:kJ·mol–1)为() A: 462.8 B: 925.5 C: –462.8 D: 241.8