what happens when co2 is passed through lime water in excess
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When CO2 is passed through lime water, it turns milky due to the formation of calcium carbonate which is insoluble in water. However, when excess of CO2 is passed through this solution, the milkiness disappears. This is due to the formation of calcium bicarbonate which is colorless and soluble in water.
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CaCO3 formed by reaction
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