反应条件 | 可逆反应 | 标志 | |
A | 恒温恒容 | 2SO2(g)+O2(g)⇌2SO3(g) | 混合气体的密度不变 |
B | 恒温恒压 | NH2COONH4(s)⇌2NH3(g)+CO2(g) | NH3在混合气体中的百分含量不变 |
C | 恒温恒容 | H2(g)+I2(g)⇌2HI(g) | Qp(分压商,用分压代替浓度计算)不变 |
D | 恒温恒压 | 2NO2(g)⇌N2O4(g) | c(NO2)=2c(N2O4) |
A.A | B.B | C.C | D.D |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2