Test for Carbon Dioxide Gas

Aim: To show that carbon dioxide gas is produced when a metal carbonate reacts with acid
Equipment

• Two boiling tubes
• Delivery tube and bung
• Bunsen Burner
• Test tube rack 
• Wooden splint
• Bottle of acid
• Small amount of Metal Carbonate
• Test tube tongs
• Safety glasses

Method

1. Light your bunsen burner

2. Add a pea-sized amount of the metal carbonate into one of the boiling tubes.

3. Place this boiling tube into a test tube rack. Ensure you have the bung and delivery tube

 ready. 

4. Add 5ml of acid to the boiling tube and quickly insert the bung and delivery tube into the mouth 

of the boiling tube.

5. Holding the other boiling tube with your tongs, capture the gas produced. 

6. When you think that the tube is full, light a wooden splint. 

7. Carefully remove the boiling tube from under the delivery tube, taking care to keep

 it facing upward. 

8. Insert the burning splint into the mouth of the test tube. 

Observations:

If you weren't quick into when you shoved the splint in the test tube, then there is a chance that the
splint won't go out. But other than that, the test was a good way to test for the carbon dioxide gas.