A.加热一定质量的KMnO4固体制取氧气 |
B.氯化铁和盐酸的混合溶液中加入氢氧化钠溶液至过量 |
C.一定质量的AgNO3和 Cu(NO3)2的混合溶液中加入足量Fe粉 |
D.稀盐酸与氢氧化钠溶液反应过程中pH变化曲线,X表示氢氧化钠溶液 |
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