. Why lime water turns milky on passing carbon dioxide gas into it?
Answers
When carbon dioxide gas is passed through or over limewater, it turns milky due to the formation of calcium carbonate. Lime reacts with acidic gases like sulfur dioxide.
Carbon dioxide reacts with limewater (a solution of calcium hydroxide, Ca(OH) 2), to form a white precipitate (appears milky) of calcium carbonate, CaCO 3. Adding more carbon dioxide results in the precipitate dissolving to form a colourless solution of calcium hydrogencarbonate.
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Answer:
When CO2 passes through lime water, it turns into milky lime water due to formation of insoluble calcium carbonate.
Explanation:
Lime water is a saturated solution of calcium hydroxide(Ca(OH2). When carbon dioxide is passed through it , a precipitate of calcium carbonate (CaCO3)of white color is formed.