实验①:向溶液中滴加盐酸溶液
实验②:向固体中加入溶液充分搅拌浸泡
[已知:常温下,,,,,的电离常数:,,溶液混合后体积变化忽略不计],下列说法
A.实验①选用酚酞作指示剂时,滴定终点发生反应为 |
B.实验①中时,存在: |
C.实验②中再加入溶液,可将完全转化为 |
D.实验②静置,向上层清液中滴加溶液,会析出和 |
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