Statement-1 : Temporary hardness can be removed by
boiling.
Statement-2 : On boiling the soluble bicarbonates change
to carbonates which being insoluble, get precipitated.
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Temporary hardness can be removed by boiling due to the following reasons :
- The boiling water causes precipitation of magnesium carbonate (solid) and calcium carbonate(solid).
- This factor or step plays a important role by removing calcium ions or magnesium ions from the water, and so removes the hardness from the water.
On boiling the soluble bicarbonates change to carbonates which being insoluble, gets precipitated due to the following reasons :
- Bicarbonates are soluble in water as they contain one H+ ion in it which causes the solubility of bicarbonates in water and further it gets precipitated.
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