What is H2Cr4O3? Important Knowledge about H2Cr4O3

1. Definition of H₂Cr₄O₃

H₂Cr₄O₃, commonly known as Chromic Hydroxide, is called Chromic Acid in English. It is a chemical compound belonging to the group of acid oxides. The atomic number of H₂Cr₄O₃ is 97.99 (H=12, Cr=51,99614, O=16*3). Its molecular weight is 194 g/mol. The H₂Cr₄O₃ molecule consists of 2 Hydrogen atoms, 4 Chromium atoms, and 3 Oxygen atoms. In the ions of H₂Cr₄O₃, Cr has an oxidation state of +6.

2. Characteristics of H₂Cr₄O₃

2.1 Physical properties of H₂Cr₄O₃: H₂Cr₄O₃ usually exists in a solid state, black in color and odorless. The pH of this substance is very acidic.

2.2 Chemical properties of H₂Cr₄O₃: H₂Cr₄O₃ is very easily oxidized, forming Cr₂O₃ when heated.

3. Common chemical equations of H₂Cr₄O₃: Due to its strong acidic nature, H₂Cr₄O₃ often participates in ion exchange reactions with metals and salts.

4. Synthesis of H₂Cr₄O₃

4.1 Laboratory synthesis of H₂Cr₄O₃: Heat a solution of CrO₃ in concentrated sulfuric acid.

4.2 Industrial synthesis of H₂Cr₄O₃: On an industrial scale, H₂Cr₄O₃ is produced by electrolysing a solution of CrO₃ in sulfuric acid.

Note: The information above is for reference only.