When We Blow Exhaled Air?

When exhaled air is blown through Lime Water which is also known as calcium hydroxide, the carbon dioxide present in the exhaled air reacts with the Lime water and turns it into a milky solution, since the the CO2 reacts with Ca(OH)2 and forms CaCO3 or Calcium Carbonate, which is insoluble and white in colour.

What is observed when you blow your breath through Limewater?

Using lime water is a fun and easy way to test for the presence of carbon dioxide. The exhaled carbon dioxide is used to produce a precipitate of calcium carbonate with the lime water.

When we blow air through our mouth into freshly prepared lime water it becomes white Why?

When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of carbon dioxide in the exhaled air.