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

Options

A. `H^(+)`ion
B. `Ca^(++)` ions
C. `SO_(4)^(=)` ions
D. `Mg^(++)` ions

Answer

B,D

Explanation

`Na_(2)Al_(2)Si_(2)O_(8).xH_(2)O" "("zerolite") + Ca^(2+) to CaAl_(2) Si_(2)O_(8).xH_(2)O+ 2Na^(+)`
or , or
`Mg^(2+) , MgAl_(2)Si_(2)O_(8).xH_(2)O`