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  4. The method used to remove temporary hardness of water is:

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Q. The method used to remove temporary hardness of water is:

NEETNEET 2019Hydrogen

Solution:

Clark's method is used to remove temporary hardness of water, in which bicarbonates of calcium and magnesium are reacted with slaked lime $Ca(OH)_2$
$Ca \left( HCO _3\right)_2+ Ca ( OH )_2 \longrightarrow 2 CaCO _3 V +2 H _2 O$
$Mg \left( HCO _3\right)_2+2 Ca ( OH )_2 \longrightarrow 2 CaCO _3 V + Mg ( OH )_2 V +2 H _2 O$