Acid + Carbonate
Acids react with metal carbonates produces salt, water and carbon dioxide
Acids + Metal Carbonate → Salt + Water + Carbon Dioxide Gas
Example:
Sulphuric acid + Lime Stone
H2SO4 +CaCO3 → CaSO4 + CO2 + H2O
Nitric acid + Copper(II) Carbonate
2HNO3 +CuCO3 → Cu(NO3)2 +CO2 + H2O
Example of Experiment
Procedure
- About 5 cm³ of dilute sulphuric acid is poured into a test tube.
- One spatula of calcium carbonate powder is added into the test tube.
- The gas released is passed through lime water as shown in the diagram above.
- The observations are recorded
Observation
Colourless gas is released. The gas turn lime water chalky.
Inference
Sulphuric acid reacts with calcium carbonate.
The gas released is carbon dioxide.
Chemical Equation:
H2SO4 +CaCO3 → CaSO4 +CO2 + H2O