What is the product of the reaction when anhydrite undergoes hydration?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Gypsum.
- When anhydrite (CaSO₄) undergoes hydration, it reacts with water to form gypsum (CaSO₄·2H₂O).
- In this reaction, anhydrite, which is an anhydrous form of calcium sulfate, takes up water molecules and converts into gypsum, which is a hydrated form of calcium sulfate.