A.MgCl2·nH2O(s)=MgCl2·(n-1)H2O(s)+H2O(g) ΔH>0 |
B.MgCl2·2H2O(s)=Mg(OH)2(s)+2HCl(g),HCl气流可抑制反应进行 |
C.MgCl2·H2O(s)=Mg(OH)Cl(s)+HCl(g),升高温度,反应更易发生 |
D.MgCl2·4H2O(s)=MgCl2·2H2O(s)+2H2O(g),HCl气流可抑制反应进行 |
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