A.乙酰胺与盐酸混合共热:CH3CONH2+H2O+H+CH3COOH+NH |
B.向硝酸银溶液中滴入少量氨水:Ag++2NH3·H2O=[Ag(NH3)2]++2H2O |
C.向Na2S2O3溶液中加入足量稀硝酸:S2O+2H+=S↓+SO2↑+H2O |
D.一定条件下,由乳酸[CH3CH(OH)COOH]合成聚乳酸的化学方程式: |
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