A.通入过量Cl2:Fe2+、H+、NH4+、Cl–、SO42– |
B.加入少量NaClO溶液:NH4+、Fe2+、H+、SO42–、ClO– |
C.加入过量NaOH溶液:Na+、Fe2+、NH4+、SO42–、OH– |
D.加入过量NaClO和NaOH的混合溶液:Na+、SO42–、Cl–、ClO–、OH– |
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