普通考研分析化学单项选择题每日一练(2019.05.13)

A.10ml
B.20mL
C.30mL
D.40mL

A.0.68V
B.0.86V
C.1.44V
D.1.06V

A.H₃Y^-
B.H₂Y^2-
C.HY^3-
D.Y^4-

A.+0.1%
B.-0.1%
C.+3%
D.-3%

A.钾、钠选0.4nm，铁选0.1nm
B.钾、钠选0.1nm，铁选0.4nm
C.钾、钠、铁均选0.1nm
D.钾、钠、铁均选1.0nm