Question:

The temporary hardness of water is due to calcium bicarbonate can be removed by adding

Updated On: Jun 14, 2022
  • CaCO3 CaCO_3
  • Ca(OH)2 Ca(OH)_2
  • CaCl2 CaCl_2
  • HCl HCl
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The Correct Option is B

Solution and Explanation

Lime treatment remove bicarbonate hardness by forming insoluble CaCO3 CaCO_3 as Ca(HCO3)2+Ca(OH)22CaCO3+2H2O Ca(HCO_3)_2 + Ca(OH)_2 \rightarrow 2CaCO_3 \downarrow + 2H_2O
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