Help!
We are doing an experiment where we are burning off water and carbon dioxide from a sample of baking soda. The setup is a flask of lime water with a rubber tube connecting it to a second flask where the baking soda is. When heating the baking soda, it causes the lime water to produce air bubbles (due to the carbon dioxide?). When you stop heating the flask of baking soda, why is it that the lime water will be sucked into the flask containing the baking soda? I'm sure there is a simple answer.. But I can't figure out how to explain it. Any help will be appreciated! Thanks!
vacuums
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Xen
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Re: vacuums
When you stop heating, temperature of the gas (CO2) drops and therefore its volume decreases (ideal gas law). Since it now allocates less volume the liquid from the flask with lime water is sucked back.LostInChem wrote:Help!
We are doing an experiment where we are burning off water and carbon dioxide from a sample of baking soda. The setup is a flask of lime water with a rubber tube connecting it to a second flask where the baking soda is. When heating the baking soda, it causes the lime water to produce air bubbles (due to the carbon dioxide?). When you stop heating the flask of baking soda, why is it that the lime water will be sucked into the flask containing the baking soda? I'm sure there is a simple answer.. But I can't figure out how to explain it. Any help will be appreciated! Thanks!
Do you do this experiment in lab or is it a backyard chemistry experiment?