下列反应的ΔrHθ不等于产物的ΔfHθ的是
A: 1/2H2(g)+1/2I2(s)=HI(g)
B: CO(g)+1/2O2(g)=CO2(g)
C: H2(g)+1/2O2(g)=H2O(g)
D: C(石墨)+O2(g)=CO2(g)
A: 1/2H2(g)+1/2I2(s)=HI(g)
B: CO(g)+1/2O2(g)=CO2(g)
C: H2(g)+1/2O2(g)=H2O(g)
D: C(石墨)+O2(g)=CO2(g)
举一反三
- 下列反应的ΔrHθ不等于产物的ΔfHθ的是( ) A: 1/2H2(g)+1/2I2(s)=HI(g) B: CO(g)+1/2O2(g)=CO2(g) C: H2(g)+1/2O2(g)=H2O(g) D: C(石墨)+O2(g)=CO2(g)
- 下列反应的ΔrHθ不等于产物的ΔfHθ的是 A: 1/2H2(g)+1/2I2(s)=HI(g) B: CO(g)+1/2O2(g)=CO2(g) C: H2(g)+1/2O2(g)=H2O(g) D: C(石墨)+O2(g)=CO2(g)
- 【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
- 下列反应中,∆cHmΘ与产物的∆fHmΘ相同的是() A: C(石墨)+1/2O2(g)= CO(g) B: NO(g)+1/2 O2(g)= NO2(g) C: S(正交)+O2(g)= SO2(g) D: H2(g)+1/2 O2(g)= H2O(g)
- 在温度T和压力pθ时理想气体反应:(Ⅰ)2H2O(g)=2H2(g)+O2(g) Kθ1 (Ⅱ)CO2(g)=CO(g)+1/2O2(g) Kθ2则反应:(Ⅲ)CO(g)+H2O(g)=CO2(g)+H2(g)的Kθ3应为 A: 这是单选题 B: Kθ3= Kθ1/Kθ2 C: Kθ3= Kθ1Kθ2 D: Kθ3=(Kθ1)1/2/Kθ2 E: Kθ3= Kθ2/Kθ1