A.若X为Na2SO3,当吸收液pH=1.85时:c(Na+)=c()+c(H2SO3) |
B.若X为Na2SO3,当吸收液呈中性时:2c()+c()=c(Na+) |
C.若X为 (NH4)2SO3,(NH4)2SO3溶液呈碱性,说明水解程度:> |
D.若X为 (NH4)2SO3,图中b点溶液中n()∶n()= 1∶3 |
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