What is observed when carbon dioxide gas is passed through lime water. (i) For a short duration
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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(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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