By Anne Marie Helmenstine, Ph.D., About.com
This is the space-filling molecular structure for carbon dioxide.
Ben MillsReactants
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
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