Acids & Carbonates

Acids and carbonates when they are mixed release carbon dioxide, water and salt.

Acid + Carbonate à Salt + Carbon Dioxide + Water 

Mixtures	Equations	Observations
Hydrochloric Acid + Copper Carbonate	2HCl + CuCO3 ---> CO2 + H2O + CuCl2	When the acid and carbonate mix together there is an immediate reaction as the mixture fizzes up it rises right to the top of the test tube and then suddenly starts to drop back down and goes back to a liquid, then about 20 seconds later it has started to change from an originally green cloudy colour to a clear light blue
Hydrochloric Acid + Magnesium Carbonate	2HCl + MgCO3 ---> CO2 + H2O + MgCl2	When the acid and carbonate mix together there is an immediate reaction as the mixture fizzes up it rises to about half way up the test tube and then suddenly starts to drop back down and goes back to a cloudy milky coloured liquid, unlike the copper carbonate solution this mixture doesn’t go back to a see-through clear liquid it remains cloudy with the milky colour.

Metal carbonates normally react with acid to form different types of salts, carbon dioxide and water. A metal carbonate is a type of metal that is made as a result of a mixture between carbon and oxygen. Hence the equation.

Acid + Carbonate ----> Salt + Water + Carbon Dioxide