已知下列反应N2(g) + 3H2(g) = 2NH3(g) (1)1/2N2(g) + 3/2H2(g) = NH3(g) (2) 1/3N2(g) + H2(g) = 2/3NH3(g) (3)的平衡常数分别为 Kθ1 、Kθ2 、Kθ3 ,则它们的关系是 A: Kθ1=Kθ2=Kθ3 B: Kθ1 = (Kθ2)2 = (Kθ3)3 C: Kθ1 =3/2Kθ2 =2/3Kθ3 D: Kθ1 = (Kθ2)1/2 = (Kθ3)1/3
已知下列反应N2(g) + 3H2(g) = 2NH3(g) (1)1/2N2(g) + 3/2H2(g) = NH3(g) (2) 1/3N2(g) + H2(g) = 2/3NH3(g) (3)的平衡常数分别为 Kθ1 、Kθ2 、Kθ3 ,则它们的关系是 A: Kθ1=Kθ2=Kθ3 B: Kθ1 = (Kθ2)2 = (Kθ3)3 C: Kθ1 =3/2Kθ2 =2/3Kθ3 D: Kθ1 = (Kθ2)1/2 = (Kθ3)1/3
N2(g) + 3H2(g) = 2NH3(g)中N2、H2、NH3的化学计量数分别为( ) A: 1, 3, 2 B: -1, -3, 2 C: 1, 3, -2 D: -1, -3, -2
N2(g) + 3H2(g) = 2NH3(g)中N2、H2、NH3的化学计量数分别为( ) A: 1, 3, 2 B: -1, -3, 2 C: 1, 3, -2 D: -1, -3, -2
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
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
当同一反应有两种写法时:⑴ N2 (g) + 3 H2(g) → 2 NH3 (g)ΔrGmΘ1⑵ 1/2N2(g) + 3/2H2(g) → NH3 (g)ΔrGmΘ2则ΔrGmΘ1 和ΔrGmΘ2 的关系是 A: ΔrGmΘ1 = ΔrGmΘ2 B: ΔrGmΘ1 = (ΔrGmΘ2)2 C: ΔrGmΘ1 = 1/2ΔrGmΘ2 D: ΔrGmΘ1 = 2 ΔrGmΘ2
当同一反应有两种写法时:⑴ N2 (g) + 3 H2(g) → 2 NH3 (g)ΔrGmΘ1⑵ 1/2N2(g) + 3/2H2(g) → NH3 (g)ΔrGmΘ2则ΔrGmΘ1 和ΔrGmΘ2 的关系是 A: ΔrGmΘ1 = ΔrGmΘ2 B: ΔrGmΘ1 = (ΔrGmΘ2)2 C: ΔrGmΘ1 = 1/2ΔrGmΘ2 D: ΔrGmΘ1 = 2 ΔrGmΘ2
设函数g(x)可微,h(x)=lng(x),h’(1)=1,g’(1)=2,则g(1)等于()。 A: e B: 1 C: 2 D: 3
设函数g(x)可微,h(x)=lng(x),h’(1)=1,g’(1)=2,则g(1)等于()。 A: e B: 1 C: 2 D: 3
反应N2(g) + 3H2(g) = 2NH3(g)的ΔG = a,则NH3(g) = 1/2N2(g) + 3/2H2(g)的ΔG为: ( ) A: a2 B: 1/a C: 1/ a2 D: –a/2
反应N2(g) + 3H2(g) = 2NH3(g)的ΔG = a,则NH3(g) = 1/2N2(g) + 3/2H2(g)的ΔG为: ( ) A: a2 B: 1/a C: 1/ a2 D: –a/2
[color=#000000]琥珀的用量是∶[/color] A: 15~30 g B: 1.5~3 g C: 0.3~1 g D: 5~15g E: 1~3 g
[color=#000000]琥珀的用量是∶[/color] A: 15~30 g B: 1.5~3 g C: 0.3~1 g D: 5~15g E: 1~3 g
298K时,N2(g)+3H2(g)=2NH3(g),△rHm(1)=-92.38kJ.mol-1,则1/2N2(g)+3/2H2(g)=NH3(g)△rHm(2)=()
298K时,N2(g)+3H2(g)=2NH3(g),△rHm(1)=-92.38kJ.mol-1,则1/2N2(g)+3/2H2(g)=NH3(g)△rHm(2)=()
平面上,二次曲线[img=260x26]180319fd1fccd9f.png[/img]的一个渐近方向是( ) A: (1, 1) B: (-3, 1) C: (1, -1) D: (1, 3) E: (1, -3) F: (1, 2) G: (0, 0 )
平面上,二次曲线[img=260x26]180319fd1fccd9f.png[/img]的一个渐近方向是( ) A: (1, 1) B: (-3, 1) C: (1, -1) D: (1, 3) E: (1, -3) F: (1, 2) G: (0, 0 )
已知 N2(g) + 3H2(g) =2NH3(g);1/2N2(g) + 3/2H2(g) =NH3(g) 和1/3N2(g) + H2(g) =2/3NH3(g) 的平衡常数分别为K1、K2和K3,则它们的关系是: A: K1 = K2 = K3 B: K1 = (K2)2 = (K3)3 C: K1 =2K2 = 3K3 D: K1 = (K2)1/2 = (K3)1/3
已知 N2(g) + 3H2(g) =2NH3(g);1/2N2(g) + 3/2H2(g) =NH3(g) 和1/3N2(g) + H2(g) =2/3NH3(g) 的平衡常数分别为K1、K2和K3,则它们的关系是: A: K1 = K2 = K3 B: K1 = (K2)2 = (K3)3 C: K1 =2K2 = 3K3 D: K1 = (K2)1/2 = (K3)1/3