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The reagent used for softening the tempo...

The reagent used for softening the temporary harness of water is

A

Boiling

B

`Ca(OH)_(2)`

C

`NaCO_(3)`

D

`NaOCl`

Text Solution

Verified by Experts

The correct Answer is:
A, B
`(a)Ca(OH)_(2) to "Clark.s method"`
(b) `Ca(HCO_(3))_(2) overset(Delta)to underset("inso lub le") (CaCO_(3))+H_(2)+O+CO_(2)` (boiling)
(d) `NaOCl+H_(2)O to HOCl+NaOH`
`OH^(-)+HCO_(3)^(-) to CO_(3)^(-2)+H_(2)O`
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