What happens when carbon dioxide gas is passed through lime water?Write a word equation for this process.Name the type of change which take place.

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Solution

Dear student,

Lime water is calcium hydroxide (Ca(OH)₂. When carbon dioxide is passed into it, it turns milky because of the formation of calcium carbonate (CaCO₃). The balanced reaction is as follows:

Ca(OH)₂ + CO₂ → CaCO₃ + H₂O
i.e. Lime water+Carbon dioxide---> Milky precipitate of calcium carbonate+water.

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