p-Block elementsHard
Question
The temporery hardness of water due to calcium bicarbonate can be removed by adding :
Options
A.CaCO3
B.Ca(OH)2
C.CaCl2
D.HCl
Solution
ith Ca(OH)2, soluble Ca(HCO3)2 converts to insoluble CaCO3 (Clark′s method)
Ca(HCO3)2 + Ca(OH)2 → 2CaCO3 ↓ + 2H2O
Ca(HCO3)2 + Ca(OH)2 → 2CaCO3 ↓ + 2H2O
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