When you add potassium carbonate (K₂CO₃) to dilute sulfuric acid (H₂SO₄), you'll get a chemical reaction that produces:

* Potassium sulfate (K₂SO₄): This is a white, soluble salt.

* Carbon dioxide (CO₂): This is a colorless, odorless gas.

* Water (H₂O):

The balanced chemical equation for this reaction is:

K₂CO₃ (aq) + H₂SO₄ (aq) → K₂SO₄ (aq) + CO₂ (g) + H₂O (l)

Here's what happens:

1. Acid-base reaction: Sulfuric acid (H₂SO₄) is a strong acid, and potassium carbonate (K₂CO₃) is a base. The acid donates hydrogen ions (H⁺) to the base, forming carbonic acid (H₂CO₃).

2. Decomposition: Carbonic acid is unstable and quickly decomposes into carbon dioxide (CO₂) and water (H₂O).

3. Gas formation: The carbon dioxide gas bubbles out of the solution, often causing fizzing or effervescence.

Observation: The reaction is quite vigorous, with the release of carbon dioxide gas. The solution will likely heat up slightly as well.