What Happens When Caco3 Reacts With H2So4

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What Happens When CaCO3 Reacts with H2SO4?

When calcium carbonate (CaCO3) reacts with sulfuric acid (H2SO4), it produces calcium sulfate (CaSO4), carbon dioxide (CO2), and water (H2O).

Balanced Chemical Equation

The balanced chemical equation for this reaction is as follows:

“`
CaCO3 + H2SO4 → CaSO4 + CO2 + H2O
“`

Reaction Mechanism

The reaction mechanism for this reaction is as follows:

1. The calcium carbonate (CaCO3) dissolves in water to form calcium ions (Ca2+) and carbonate ions (CO32-).
2. The sulfuric acid (H2SO4) dissociates in water to form hydrogen ions (H+) and sulfate ions (SO42-).
3. The calcium ions (Ca2+) and sulfate ions (SO42-) react to form calcium sulfate (CaSO4).
4. The carbonate ions (CO32-) react with the hydrogen ions (H+) to form carbon dioxide (CO2) and water (H2O).

Applications

This reaction is used in a variety of applications, including:

  • The production of calcium sulfate, which is used as a fertilizer and in the production of plaster of Paris.
  • The removal of carbon dioxide from industrial gases.
  • The production of sulfuric acid.

Safety Precautions

This reaction can produce harmful fumes, so it is important to take the following safety precautions:

  • Wear gloves and eye protection.
  • Work in a well-ventilated area.
  • Do not mix the reactants directly. Add the acid to the water first, then add the calcium carbonate.

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