MadSci Network: Chemistry

Subject: Carbon dioxide in soda

Posted by Sayre Payne
Grade level: 4-6
School: Jasper Elementary
City: Jasper State/Province: OH
Country: USA
Area of science: Chemistry

What CAUSES the immediate release of carbon dioxide in carbonated beverages when salt is added? My science fair experiment is measuring CO2 in 3 different soda pop brands. T he experiment calls for placing salt in a balloon and tipping the balloon to add to the bottle of soda. The release of CO2 is immediate, and I measure the balloons. I need to know what has occured that causes the immediate reaction. I have been unable to find the answer in my resources. I need this answer in case the judges ask me.

Re: Carbon dioxide in soda

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