Testing for Carbon Dioxide Gas

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

Equipment Two boiling tubes, Delivery tube, and bung, lighter, Test tube rack, Wooden splint, A bottle of acid, Small amount of metal carbonate, Test tube tongs, Safety glasses

Method

1 Light you're lighter.
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 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 the tube is full, your lab partner should light a wooden splint
7Carefully 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.

observations

When the burning splint was put into the mouth of the boiling tube the flame instantly went out