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Chemical A is used for water softening t...

Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When `CO_(2)` is bubbled through a solution of A, it turns cloudy. What is the chemical formula of A ?

A

`CaCO_(3)`

B

CaO

C

`Ca(OH)_(2)`

D

`Ca(HCO_(3))_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`Ca(OH)_(2) + underset("sodium carbonate")(Na_(2)CO_(3))to2CaCO_(3)+underset("Caustic soda")(2NaOH)`
`underset(A)(Ca(OH)_(2)+2CO_(2)tounderset("Calcium bicarbonate ")(Ca(HCO_(3))_(2))`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 17-PHYSICS & CHEMISTRY
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