A.碳酸钡与盐酸反应:2H++BaCO3=Ba2++H2O+CO2↑ |
B.氢氧化钡溶液与稀硫酸混合:Ba2++SO+H++OH-=BaSO4↓+H2O |
C.氯气通入蒸馏水中:Cl2+H2O=Cl-+ClO-+2H+ |
D.氢氧化钠溶液中通入少量二氧化碳:CO2+OH-=HCO |
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