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What is temporary hardness of water? How is it removed? |
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Answer» Solution :Temporary hardness of WATER is due to the presence of soluble bicarbonates of magnesium and calcium. By heating / boiling, these salts decomposed into insoluble carbonate and hydroxide, respectively. The RESULTING precipitates can be removed by filtration. `Ca(HCO_(3))_(2)_(aq)toCaCO_(3(s))+H_(2)O_((l))+CO_(2(g))` `Mg(HCO_(3))_(2)_(aq)toMg(OH)_(2(s))+CO_(2(g))` |
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