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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

`NaOCI`

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
b. Clarke's method: `underset("Temporary hardness")Ca(HCO_(3))_(2) +Ca(OH)_(2)rarr2CaO_(3)darr2H_(2)O`
c. `Ca(HCO_(3))_(2)+Na_(2)CO_(3)rarr CaCO_(3)darr 2NAHCO_(3)`
d. `NaOHI+H_(2)O` `HOCI+NaOH`
`O^(Theta)H+HCO_(3)^(Theta)rarr CO_(3)^(2-)+H_(2)O`
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