A.工业上制取氧气 2H2O22H2O+O2↑ 分解反应 |
B.比较铁和铜的金属活动性 3CuCl2+2Fe=3Cu+2FeCl3 置换反应 |
C.铁丝在氧气中燃烧 3Fe+2O2Fe3O4 化合反应 |
D.小苏打治疗胃酸过多症 Na2CO3+2HCl=2NaCl+H2O+CO2↑ 复分解反应 |
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