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What does carbon dioxide gas do to lime water?

Answer and explanation

Correct answer: Milky

Lime water is a dilute solution of calcium hydroxide. When carbon dioxide is passed through it, the reaction CO₂ + Ca(OH)₂ → CaCO₃ + H₂O forms insoluble calcium carbonate, which makes the solution appear milky. Hence option A is correct. Blue, red, and black are not the characteristic result of the standard carbon-dioxide test.

Related tags

Carbon DioxideLime WaterTest ReactionsAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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