A.常温下,Ka(HX)=10-4,Ka(HY)=10-8.5 |
B.a点溶液中,c(X-)=c(HX)>c(Na+)>c(H+)>c(OH-) |
C.常温下,0.1mol/LNaX溶液pH大于0.1mol/LNaY溶液的pH |
D.往HY溶液中滴入NaOH溶液后所得的混合溶液中,=10pH-pKa(HY) |
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