Producing and Testing for CO2 Gas

Producing and Testing for CO2 Gas

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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.

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Keywords: acid, baking soda, beaker, caco3, calcium, calcium hydroxide, caoh2, carbon dioxide, carbonate, chemical, chemistry, co2, collect, collecting, collection, erlenmeyer flask, flask, gas, generate, generation, h2so4, lime water, nahco3, produce, production, reaction, sodium bicarbonate, sulfuric acid, test

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