What observation is seen when carbon dioxide is bubbled through limewater?

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Multiple Choice

What observation is seen when carbon dioxide is bubbled through limewater?

Explanation:
When carbon dioxide is bubbled through limewater, the liquid turns milky. Limewater is a solution of calcium hydroxide, and CO2 reacts with it to form calcium carbonate, which is insoluble and forms a white precipitate that suspends in the water, making the solution look cloudy. The reaction can be written as Ca(OH)2 + CO2 → CaCO3 + H2O. Limewater is normally clear, so the cloudy appearance is the telltale sign of CO2 being present. The other colors don’t apply here because limewater is colorless and does not produce blue or red changes in this test.

When carbon dioxide is bubbled through limewater, the liquid turns milky. Limewater is a solution of calcium hydroxide, and CO2 reacts with it to form calcium carbonate, which is insoluble and forms a white precipitate that suspends in the water, making the solution look cloudy. The reaction can be written as Ca(OH)2 + CO2 → CaCO3 + H2O. Limewater is normally clear, so the cloudy appearance is the telltale sign of CO2 being present. The other colors don’t apply here because limewater is colorless and does not produce blue or red changes in this test.

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