Question

what happens when carbon dioxide is passed through lime water

Answer 1

The milkiness disappears since calcium bicarbonate is water-soluble. When carbon dioxide is passed through lime water which is a diluted solution of Ca(OH) 2, it turns milky due to the formation of calcium carbonate which is CaCO3.

Answer 2

Hey...!!!!
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Here's ur answer
when we pass carbon dioxide through lime water it will turns milky and form precipitates.
CO2 + Ca(OH)2--->CaCO3(ppt.)
this is a test which is used to check whether carbon dioxide is released or not...
There is also another test by br8nging a lighted candle near test tube if it will extinguish it means carbon dioxide released.
Hope it will help u