How would you test for the presence of carbon dioxide in air?

Asked by Priscil | 13th Jun, 2008, 05:02: PM

Expert Answer:

Take some freshly prepared lime water in a test tube. Use a syringe to pass airthrough this lime water. If you pass the air through syringe several times, lime water will slowly turn milky. This indicated the presence of CO2 in air.

or

Place a few spoonfuls of clear lime-water in an open container for several days. You will find white deposits of lime-stone form around the edge of the container at the surface of the lime-water. This is the result of carbon dioxide in the air combining with the lime-water.

Answered by  | 15th Jun, 2008, 08:14: AM

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