Chemistry

Carbon Dioxide - How to Prepare Carbon Dioxide Gas

This is the space-filling molecular structure for carbon dioxide.

Ben Mills

These are instructions for preparing carbon dioxide gas (CO₂) from calcium carbonate and hydrochloric acid.

Reactants

calcium carbonate (marble chips)
5 M hydrochloric acid

Gas Preparation

Add 5 M hydrochloric acid to 5 - 10 g marble chips. Collect the carbon dioxide from the upward displacement of air in a hood.

Reaction

2HCl + CaCO₃ --> CO₂ + CaCl₂ + H₂O

Guide since 2001