What is CuSO4? Important knowledge about CuSO4.

1. Definition of CuSO₄

CuSO₄ is the chemical formula of the chemical compound Copper (II) Sulfate, also known as copper sulfate. According to Mendeleev’s periodic table, Cu atoms have an atomic mass of 63.546 and a nuclear particle number of 29. A CuSO₄ molecule consists of one copper atom (Cu), one sulfur atom (S), and four oxygen atoms (O). In solution, CuSO₄ dissociates into Cu₂+ and SO₄ 2- ions.

2. Properties of CuSO₄:

2.1 Physical properties of CuSO₄: Copper (II) sulfate usually appears as blue powder or blue crystals. It is quite salty and has a distinctive smell. In terms of pH, it is a mild alkali.
2.2 Chemical properties of CuSO₄: CuSO₄ easily decomposes in water and creates a bright blue solution. It can react with metals like iron, zinc to form new copper salts.

3. Common chemical equations involving CuSO₄:
   Reaction with metal: CuSO₄ + Zn -> ZnSO₄ + Cu
   Reaction with acid: CuSO₄ + 2HNO₃ -> Cu(NO₃)₂ + H₂SO₄
   Reaction with non-metal: CuSO₄ + S -> CuS + SO₂
   Reaction with salt: CuSO₄ + 2NaCl -> CuCl₂ + Na₂SO₄

4. Preparation of CuSO₄:

4.1 Laboratory preparation of CuSO₄: Cu + 4H₂SO₄ -> CuSO₄ + 2H₂O + SO₂
4.2 Industrial preparation of CuSO₄: Cu + 2H₂SO₄ -> CuSO₄ + 2H₂O + SO₂

In general, CuSO₄ is an important chemical compound widely used in many fields such as agriculture, health, chemistry, etc. Students need to grasp the knowledge about its characteristics, properties and applications.