sciguy1216 Posted September 17, 2005 Report Share Posted September 17, 2005 I was wondering if anyone knew of any CO2 Indicators. If you do please tell me the name. I guess what I want is some kind of a liquid that chages to a certain color when it comes in contact with carbon dioxide.Thanks! Quote Link to comment Share on other sites More sharing options...
HydrogenBond Posted October 3, 2005 Report Share Posted October 3, 2005 One can improvise and make your own. Carbon dioxide dissolved in water forms carbonic acids. As such, how about a little phenylthaline acid indicator in water. Just bubble the air into the water until there is color change. It may need to be calibrated if you want to quantify your results. Air blowing across damp litmus paper might also work. Quote Link to comment Share on other sites More sharing options...
sciguy1216 Posted October 4, 2005 Author Report Share Posted October 4, 2005 Thanks but I found that limewater reacts to CO2 by producing calcium carbonate and makes the limewater look transclucent. Quote Link to comment Share on other sites More sharing options...
learnin to learn Posted October 29, 2005 Report Share Posted October 29, 2005 shoot I just used one in a enviromental science project but I cannot remember the name of it!!! limewater works? Quote Link to comment Share on other sites More sharing options...
Odin Posted December 2, 2005 Report Share Posted December 2, 2005 Thanks but I found that limewater reacts to CO2 by producing calcium carbonate and makes the limewater look transclucent. Are you sure about that? Ca(OH)2 + CO2 = H2O + CO + CaO2 => CO2 + CaO Last time I checked that was the proper formulation Quote Link to comment Share on other sites More sharing options...
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