These are instructions for preparing carbon dioxide gas (CO2) from calcium carbonate and hydrochloric acid.
Carbon Dioxide Reactants
Only two materials are needed to make carbon dioxide:
- calcium carbonate (marble chips)
- 5M hydrochloric acid
Carbon Dioxide Gas Preparation
- Add 5M hydrochloric acid to 5g-10g marble chips. Carbon dioxide gas is released by the chemical reaction.
- Collect the carbon dioxide from the upward displacement of air in a hood. Carbon dioxide is about 60% denser than air, so it will fill the reaction container.
2HCl + CaCO3 → CO2 + CaCl2 + H2O