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Tell me What happens when carbon dioxi...

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What happens when carbon dioxide gas is passed through lime water and why does it disappear on passing excess carbon dioxide?

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On passing `CO_2` gas through lime water, it turns milk due to formation of insoluble calcium carbonate whict dissolves on passing excess `CO_2` due to the formation of soluble calcium bicarbonate.
`Ca)OH)_2+CO_2(----toCaCO_3(s)+H_2O(l)`
`CaCO_3(s)+H_2O(l)+CO_2(g)------toCa(HCO_3)_2` (soluble)
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