A.将稀硫酸滴在铁片上:2Fe+6H+=2Fe3++3H2↑ |
B.将碳酸氢钠溶液与稀盐酸混合:+H+=H2O+CO2↑ |
C.将硫酸铜溶液与氢氧化钠溶液混合:CuSO4+2OH-=Cu(OH)2↓+ |
D.将硝酸银溶液与氯化钠溶液混合:AgNO3+Cl-=AgCl↓+ |
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