The reagents, `NH_(4)Cl` and aqueous `NH_(3)` will precipitate

Options

A. `Ca^(2+)`
B. `Al^(+3)`
C. `Mg^(2+)`
D. `Zn^(2+)`

Answer

B

Explanation

`NH_(3) + H_(2) to NH_(4)OH` due to common ion effect `NH_(4)^(+)` ion concentration increases which leads to the precipitation of `Al(OH)_(3)`