Theory:

carbon dioxide chemical property.JPG
 
Combustibility:
 
Carbon dioxide is neither combustible gas nor supports for combustion.
 
Reaction with metals:
 
Lighter metals such as sodium, potassium and calcium, combine with \(CO_2\) to form corresponding carbonates, while magnesium gives its oxide and carbon.
  
Example:
  
4Na+3CO22Na2CO3+CSodiumSodiumcarbonate2Mg+CO22MgO+CMagnesiumMagnesiumoxide
 
Reaction with sodium hydroxide (alkali):
  
When an acid reacts with a base, it forms salt and water. Carbon dioxide is an acidic oxide, which reacts with sodium hydroxide (a base) to form salt and water.
 
Acid+BaseSalt+Water
 
CO2+2NaOHNa2CO3+H2OSodiumSodiumhydroxidecarbonate
 
Reaction with lime water (calcium hydroxide or \(Ca(OH)_2\)):
  
When carbon dioxide slightly passes through lime water, it forms a white precipitate (milky appearance milky) of calcium carbonate.
 
Ca(OH)2+CO2CaCO3+H2OCalciumCalciumhydroxidecarbonate
 
When adding an excess amount of carbon dioxide through lime water, it forms a precipitate, and the precipitate disappears due to the formation of soluble calcium hydrogen carbonate (\(Ca(HCO_3)_2\)).