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What happens when carbon dioxide gas is bubbled through lime water? (a) In small amount, (b) In excess? |
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Answer» (a) In small amount, solution becomes milky due to the formation of calcium carbonate. Ca(OH)2 + CO2 → CaCO3 + H2O. (b) In excess, milkiness disappears because calcium carbonate changes to calcium hydrogen carbonate which is colourless in nature CaCO3 + H2O + CO2 → Ca (HCO3)2 |
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