Question

When carbon dioxide is passed through lime water,it turns milky due to the formation of


calcium carbonate

sodium hydrogen carbonate

calcium hydroxide

None of these
​

Answer 1

Answer:

Calcium Carbonate

Explanation:

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.

Answer 2

Answer:

calcium carbonate

Explanation:

Calcium hydroxide is sparingly soluble in water producing an alkaline solution known as limewater. When carbon dioxide gas is passed through or over limewater, it turns milky due to the formation of calcium carbonate.

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