What is K2CrO4? Important knowledge about K2CrO4.

Definition of K₂CrO₄:
1.1 Names:
1.1.1 Common name is Potassium Chromate.
1.1.2 English name is Potassium Chromate.
1.2. Atomic mass: The molecule K₂CrO₄ contains 2 potassium atoms (K), 1 chromium atom (Cr), and 4 oxygen atoms (O).
1.3. Molecular weight: The molecular weight of Potassium Chromate is 194.19 g/mol.
1.3.1 Molecular structure: The molecule K₂CrO₄ consists of 2 potassium ions (K+) and 1 chromate ion (CrO₄^2-).
1.4 Ion structure: The K+ ion has an electron configuration like helium, the CrO₄^2- ion has an electron configuration like neon.

Properties of K₂CrO₄:
2.1 Physical properties of K₂CrO₄
State: Solid at standard conditions
Color: Yellow
Smell: Odorless
PH Level: Highly alkaline
2.2 Chemical properties of K₂CrO₄: K₂CrO₄ mainly reacts with strong reducing agents to form Cr₃+ of blue color or Cr₂O₃ of green color.

Common chemical equations of K₂CrO₄:
Reaction with metals: K₂CrO₄ does not usually react directly with metals.
Reaction with acid: K₂CrO₄ reacts with strong acids to form K₂SO₄ and H₂CrO₄.
Reaction with nonmetals: K₂CrO₄ can react with strong reducing agents such as H₂S.
Reaction with salts: K₂CrO₄ can react with ammonium salts to form NH₄CrO₄.

Synthesis of K₂CrO₄:
4.1 Laboratory synthesis of K₂CrO₄:
The synthesis of K₂CrO₄ is usually carried out by reacting KCl and CrO₃ in an alkaline environment.
4.2 Industrial synthesis of K₂CrO₄:
On an industrial scale, K₂CrO₄ is usually produced by combining CrO₃ with KOH in a high-temperature environment.