Zusammenfassung der Ressource
Carbon Dioxide
- even though it takes up less than 1% of the air it has vital importance
- carbon dioxide is produced when carbon is burned in oxygen gas
- the word equation is; calcium carbonate + hydrochloric acid
= calcium chloride + water+ carbon dioxide
- CaCO3 + 2HCL = Cacl2 + h2o +co2
- you can test for the presence of co2 using limewater
- limewater + carbon dioxide = chalk + water
- Ca(OH)2 + CO2 = CaCO3 +H2O
- physical properties
- colourless, odourless, tasteless gas
- slightly soluble in water
- more dense than air
- chemical properties
- does not support combustion
- turns limewater milky
- dissolves in water to form carbonic acid
- uses of carbon dioxide
- fizzy drinks
- fire extinguishers
- refrigeration
- special effects on stage ( dry ice )