Testing for carbon dioxide gas and lime water

Testing for carbon dioxide gas

Experiment 1

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

Method:

1. Light your bunsen burner.
2. Add a 'Pea-sized' amount of the metal carbonate into one of the boilings 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 inserts 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.
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 in facing upright.
8. Insert the burning splint into the mouth of the test tube.

Observation: It took out the flame

Experiment 2

Method:

1. Light your bunsen burner
2. Add a 'Pea-sized' amount of the metal carbonate into one of the boilings tubes.
3. Place this boiling tube into a test tube rack. Ensure you have the bung and delivery tube ready.
4. Buuble gas into limewater

Observation: It becomes cloudy