5. What happens when we keep Lime water in Open air?
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Answered by
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Explanation:
When carbon dioxide, CO2, enters the limewater, the limewater becomes cloudy. When you exhale into the bottle, the limewater will turn cloudy.
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The lime water turns from colourless to milky.
This is because the exhaled air contains about 4% CO2.
CO2 reacts with lime water to form a milky coloured compound.
Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l)
If excess CO2 is added, the following reaction takes place:
CaCO3(s) + H2O(l) + CO2(g) → Ca(HCO3)2(aq)
The milkiness disappears since calcium bicarbonate is water-soluble.
This is because the exhaled air contains about 4% CO2.
CO2 reacts with lime water to form a milky coloured compound.
Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l)
If excess CO2 is added, the following reaction takes place:
CaCO3(s) + H2O(l) + CO2(g) → Ca(HCO3)2(aq)
The milkiness disappears since calcium bicarbonate is water-soluble.
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