What is H2Cr3O7? Important knowledge about H2Cr3O7.

1. H₂Cr₃O₇ is Chromic acid, also known as Chromic acid. Its English name is Chromic acid. Its molar mass is 294.185 g/mol. Its atomic mass includes 2 hydrogen atoms, 3 chromium atoms, and 7 oxygen atoms. This molecule has 2 hydrogen ions and 1 chromium ion.

2. H₂Cr₃O₇ is a solid substance, orange to red in color. This substance does not have a characteristic smell. Chromic acid has a low pH, characteristic of a strong acid.

The chemical properties of H₂Cr₃O₇ include strong oxidizing ability, it can react with metals to form chromium and hydrogen gas. H₂Cr₃O₇ can also react with substances such as ammonia, sulfur to form other complex compounds.

3. Examples of some common chemical equations with H₂Cr₃O₇ include:

• Reaction with Fe metal: Fe + H₂Cr₃O₇ -> FeCr₃O₇ + H₂
• Reaction with acid: H₂Cr₃O₇ + H₂SO₄ -> Cr₂(SO₄)₃ + H₂O
• Reaction with non-metal: H₂Cr₃O₇ + S -> Cr₂(SO₄)₃ + H₂S
• Reaction with salt: H₂Cr₃O₇ + NaCl -> NaCr₃O₇ + HCl

4. H₂Cr₃O₇ can be prepared by oxidizing Cr₂O₃ with diluted H₂SO₄ under high temperature conditions. In the industry, H₂Cr₃O₇ is produced from the oxidation of Cr₂O₃ with O₂ under high temperature and high pressure conditions. In the lab, H₂Cr₃O₇ can be prepared from the oxidation of CrCl₃ with KMnO₄ in an acidic environment.