Is there an experiment I can do to measure CO2 Gas in Liquid???

[427cobra]

Previously I asked if there was some sort of device, which would allow me to measure the amount of CO2 gas in Liquids. I conclude that there was nothing I could do. Some of you suggested experiments, which were very complicated, and I probably don't have the tools to carry out.

 

Are there any simpler experiments I can do, which dont require a lot of tools and HUGE piles of money!!!???

[mmalluck]

Won't disolved CO2 be evident with the use of Lithmus paper or brothel thymol blue?

 

I remember Mr. Wizard (years ago) doing something like that. Blowing through a straw into water changed it's color. CO2 made the water slightly acidic.

 

This is also why flat softdrinks often taste sweeter than their carbonated counterparts. The acidic nature and taste of the CO2 is masked by the use of more sugar. This is also true of seltzer water, but there's no sugar to begin with.