When zeolite, which is hydrated sodium aluminium silicate, is treated with hard water, the sodium ions are exchanged with

Options

A. `H^(+)` ions
B. `Ca^(2+)` ions
C. `Mg^(2+)` ions
D. Both `Ca^(2+) and Mg^(2+)`

Answer

D

Explanation

Zeolite when treated with hard water exchanges `Ca^(2+)` and `Mg^(2+)` ions (present in hard water) with `Na^(+)` ions.