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The reagent(s) used for softening the te...

The reagent(s) used for softening the temporary hardness of water is (are):

A

`Ca_(3)(PO_(4))_(2)`

B

`Ca(OH)_(2)`

C

`Na_(2)CO_(3)`

D

`NaOCl`

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
b. Clarke's method
`Ca(HCO_(3))_(2)+Ca(OH)_(2)to2CaCO_(3)darr+2H_(2)O`
c. `Na_(2)CO_(3)+Ca(HCO_(3))_(2)toCaCO_(3)darr+2NaHCO_(3)`
d. `NaOCl+H_(2)harrHOCl+NaOH`
`overset(Theta)(O)H+HCO_(3)^(ɵ)toCO_(3)^(2-)+H_(2)O`
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