Which of the following methods is used for th | vedclass

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(D) Temporary hardness of water is caused by the presence of magnesium and calcium bicarbonates,$Mg(HCO_3)_2$ and $Ca(HCO_3)_2$.Clark's method involve

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Clark’s method

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(D) Temporary hardness of water is caused by the presence of magnesium and calcium bicarbonates,$Mg(HCO_3)_2$ and $Ca(HCO_3)_2$.Clark's method involves the addition of calculated amounts of lime,$Ca(OH)_2$,to the water.This process precipitates the bicarbonates as insoluble carbonates: $Ca(HCO_3)_2 + Ca(OH)_2 \rightarrow 2CaCO_3(s) + 2H_2O(l)$ and $Mg(HCO_3)_2 + 2Ca(OH)_2 \rightarrow 2CaCO_3(s) + Mg(OH)_2(s) + 2H_2O(l)$.Therefore,Clark's method is specifically used for the removal of temporary hardness.

Which of the following methods is used for the removal of temporary hardness of water?

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