A.稀硫酸滴在铜片上:Cu+2H+=Cu2++H2↑ |
B.碳酸镁中加稀盐酸:MgCO3+2H+=Mg2++CO2↑+H2O |
C.向碳酸氢钠溶液中滴加稀盐酸:CO+2H+=H2O+CO2↑ |
D.澄清石灰水与稀盐酸反应:Ca(OH)2+2H+=Ca2++2H2O |
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