What is Cu2O2? Important knowledge about Cu2O2.

Before diving into the details, I want to clarify that there is no known chemical compound with the formula Cu₂O₂. You may have confused it with CuO – Copper(II) oxide, or Cu₂O – Copper(I) oxide. Among these two compounds, I will introduce CuO – Copper(II) oxide as an example.

1. Definition of CuO:

   • Common name: Copper(II) oxide
   • English name: Copper(II) oxide
   • Atomic mass: CuO consists of 1 copper atom and 1 oxygen atom, so its atomic mass is the sum of the atomic mass of copper and oxygen.
   • Atomic weight: Cu = 63.546u, O = 15.9994u. Therefore, the atomic weight of CuO = 63.546u + 15 -> .9994u = 79.5454u.
   • Molecular structure: Composed of 1 copper atom and 1 oxygen atom.

2. Properties of CuO:

   • State: Solid at room temperature
   • Color: Black
   • Odor: Odorless
   • pH Level: CuO is a base, so its pH level is > 7.

3. Common chemical equation involving CuO:
   CuO can react with acid to form copper salt and water. For example:
   CuO + 2HCl -> CuCl₂ + H₂O

4. Preparation of CuO:

   • Laboratory: CuO can be prepared by heating copper in the air.
   • Industrial: CuO is usually produced from the oxidation of Cu in air at high temperatures.