why does exhaled air make the limewater milky class 7
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Carbon dioxide (CO2) turns lime water milky due to the formation of insoluble calcium carbonate, CaCO3. ... When you pass carbon dioxide through this solution, the two compounds , CO2 and Ca(OH)2 , will react to produce calcium carbonate, CaCO3 , which is an insoluble white solid that precipitates out of the solution.
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Limewater can be used to detect carbon dioxide. If carbon dioxide is bubbled through limewater then it turns from clear to cloudy/milky in colour. ... After a few breaths the limewater in tube B will turn cloudy as the exhaled air contains more carbon dioxide.
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