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

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