Carbon dioxide experiment

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

Method:

1. Light your Bunsen burner
2. Ass a 'pea-sized' amount of metal carbonate into one of the boiling tubes.
3. place the boiling tube into a test tube rack. Ensure you have the bung and delivery tube ready
4. Add 5 mL 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 as shown in the diagram below.
6. When you think the tube is full, your lab partner should light a wooden splint
7. Carefully remove the boiling tube from under the delivery tube, taking care to keep it facing upright
8. Insert the burning splint into the mouth of the test tube.

OBSERVATION:

E1 - When we put the burning splint in the test tube, it got extinguished due to the presence of carbon dioxide.

E2 - We also tried it with lime water. The lime water turned from colourless to cloudy and it starts bubbling.