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why when CO2 ...

Question

why when CO2 gas is evolved in calcium hydroxide solution the products calcium carbonate and water turns milky

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Solution

Dear student,

When the CO₂ gas passed in lime water , it turns to milky in colour this is due to the formation of calcium carbonate . The reaction is :
Ca(OH)₂ + CO₂ $\underset{}{\to}$ CaCO₃ + H₂O
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