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The temporary hardness of water due to c...

The temporary hardness of water due to calcium bicarbonate can be removed by adding

A

`Ca(OH)_(2)`

B

`CaCO_(3)`

C

`CaSO_(4)`

D

`Na_(2)SO_(4)`

Text Solution

Verified by Experts

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