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Producing and Testing for CO2 Gas

Producing and Testing for CO2 Gas

C039/1312

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Credit

TURTLE ROCK SCIENTIFIC / SCIENCE PHOTO LIBRARY TURTLE ROCK SCIENTIFIC / SCIENCE PHOTO LIBRARY

Caption

Producing and testing for CO2 gas. Sulfuric acid (H2SO4, 0.4 M concentration) is added to an Erlenmeyer flask with solid sodium bicarbonate (baking soda, NaHCO3). Carbon dioxide (CO2) gas is produced in the reaction: NaHCO3 + H2SO4 -> Na2SO4 + H2O + CO2. The flask is then corked with a rubber stopper and the gas is delivered to a beaker filled with a saturated calcium hydroxide (Ca(OH)2) solution (lime water). Carbon dioxide (CO2) bubbles through lime water, producing calcium carbonate (CaCO3) precipitate that gives the solution a cloudy appearance. The reaction is: Ca(OH)2 + CO2-> CaCO3 + H2O.

Release details

Model release not required. Property release not required.

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