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What is observed when carbon dioxide gas is passed through lime water.(i) For a short duration(ii) For long duration ? Also write the chemical equations for the reaction involved. |
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Answer» (i) For short duration: Limewater turns milky due to the formation of CaCO3, Which is insoluble in water. Ca(OH)2(aq) + CO2(g) →CaCO3(s) + H2O(l) Ca(OH)2 - Lime water CaCO3(s)-White ppt. (ii) For Long duration: A clear solution is obtained due to the formation of calcium bicarbonate. Ca (HCO3)2 Which is soluble in water CaCO3(s)+ H2O(l)+CO2(g) → Ca(HCO3)2(aq) |
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