Which of the following mixtures, of ions in solution can be separated by using NaOH solution?

Options

A. `Fe^(+3)` and `Pb^(+2)`
B. `Pb^(+2)` and `Sn^(+2)`
C. `Zn^(+2)` and `Sn^(+2)`
D. `Al^(+3)` and `Cu^(+2)`

Answer

A, D

Explanation

`Pb^(2+), Al^(3+)` soluble in excess NaOH but not `Fe^(3+)` and `Cu^(2+)`