A.CuCl2溶液和H2S反应的离子方程式为S2−+Cu2+=CuS↓ |
B.FeCl3在转化过程中发生的反应为Fe3+ +CuS=Fe2++ Cu2++S |
C.O2在转化过程中发生的反应为O2 +2Fe2+ +4H+=2Fe3++2H2O |
D.反应过程中的总反应为2H2S+O2=2S↓+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