The chemical equation CaSO4 + CaCl2 -> 2CaCl2 + SO4

The chemical equation you provided is incorrect. It violates the law of conservation of atoms. A more reasonable equation could be:

CaSO₄ + 2HCl -> CaCl₂ + H₂SO₄

1. Detailed explanation of the equation:

This equation describes the reaction between calcium sulfate (CaSO₄) and hydrochloric acid (HCl) to produce calcium chloride (CaCl₂) and sulfuric acid (H₂SO₄).

2. Conditions for the reaction:

This reaction usually occurs at room temperature and standard pressure. There needs to be enough hydrochloric acid for the reaction to fully occur.

3. Reaction process:

CaSO₄, a solid, will be dissolved in hydrochloric acid. The result is the creation of calcium chloride, a water-soluble substance, and sulfuric acid.

4. Observations:

When calcium sulfate reacts with hydrochloric acid, you will see the initial mixture (solid calcium sulfate and acid solution) gradually turn into a clear solution (calcium chloride solution) with gas being released (sulfuric acid).