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(C) Clark's method is used to remove temporary hardness of water by adding calculated amounts of lime,$Ca(OH)_{2}$.The chemical reactions are:$Ca(HCO_

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$CaCO_{3}$ and $Mg(OH)_{2}$

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(C) Clark's method is used to remove temporary hardness of water by adding calculated amounts of lime,$Ca(OH)_{2}$.The chemical reactions are:$Ca(HCO_{3})_{2} + Ca(OH)_{2} \rightarrow 2CaCO_{3} \downarrow + 2H_{2}O$$Mg(HCO_{3})_{2} + 2Ca(OH)_{2} \rightarrow 2CaCO_{3} \downarrow + Mg(OH)_{2} \downarrow + 2H_{2}O$Thus,the products formed are $CaCO_{3}$ and $Mg(OH)_{2}$.

The products obtained during the treatment of hard water using Clark's method are:

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