A.石灰石与醋酸反应:CO+2CH3COOH=2CH3COO- +CO2↑+H2O |
B.铜片上电镀银的总反应(银作阳极,硝酸银溶液作电镀液):Ag(阳极)Ag(阴极) |
C.铜与稀硝酸反应:3Cu+2NO+8H+=3Cu2+ +2NO↑+4H2O |
D.明矾溶液中加入少量氢氧化钡溶液:2Al3+ +3SO+ 3Ba2++6OH-=2Al(OH)3↓+ 3BaSO4↓ |
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