Question

How can we detect the presence of carbon dioxide in the atmosphere?

Answer 1

Detection of carbon dioxide in the atmosphere:

• Fit the delivery tubes in the two-holed cork
• Now, fill half of the test tube with lime water.
• Fit this cork at the mouth of the test tube.
• Immeresed the longer tube in the lime water and the shorter tube is above the level of the lime water.
• Fit the cork tightly.
• Now, suck the air from the shorter tube, due to this space will create for air to move inside the test tube from a longer tube.
• The lime water starts turning milky white.
• The air entering from a longer tube contains carbon dioxide.
• In this way we can detect the presence of carbon dioxide in the air.