What do you observe when Carbon dioxide
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Carbon dioxide reacts with calcium hydroxide solution to produce a white precipitate of calcium carbonate. Limewater is a solution of calcium hydroxide. If carbon dioxide is bubbled through limewater, the limewater turns milky or cloudy white.
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Carbon dioxide reacts with water to form the weak acid, carbonic acid, H2CO3:
CO2 + H2O → H2CO3
The acid cannot be isolated from the solution and so is often simply written as CO2(aq). Carbonic acid causes the acidity in fizzy drinks.
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