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Temporary hardness may be removed from w...

Temporary hardness may be removed from water adding.

A

`Ca(OH)_(2)`

B

`CaCO_(3)`

C

`CaSO_(4)`

D

HCl`

Text Solution

Verified by Experts

The correct Answer is:
A
`Ca(OH)_(2)` reacts with `Ca(HCO_(3))_(2)` to precipitate `CaCO_(3)`
`Ca(HCO_(3))_(2)+Ca(OH)_(2)to2CaCO_(3)darr+2H_(2)O`
`Mg(HCO_(3))_(2)+2Ca(OH)_(2)to2CaCO_(3)darrMg(OH)_(2)darr+2H_(2)O`
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