What is Ba2Cr2O7? Important knowledge about Ba2Cr2O7.

1. Definition of Ba₂Cr₂O₇:

1.1 Names:
1.1.1 Common name: Dicromat Barium.
1.1.2 English name: Barium dichromate.

1.2 Atomic composition: Ba₂Cr₂O₇ contains 2 Barium atoms (Ba), 2 Chromium atoms (Cr) and 7 Oxygen atoms (O).

1.3 Atomic weight: The atomic weight of Ba₂Cr₂O₇ is the total weight of all the atoms within it, which is 2*(weight of Ba) + 2 -> *(weight of Cr) + 7 -> *(weight of O).

1.4 Ionic structure: When Ba₂Cr₂O₇ dissociates, it forms 2 Ba₂+ ions and 1 Cr₂O₇-2 ion.

2. Properties of Ba₂Cr₂O₇:

2.1 Physical properties of Ba₂Cr₂O₇: Ba₂Cr₂O₇ is a red or orange powder, odorless, insoluble in water and has a neutral PH level.

2.2 Chemical properties of Ba₂Cr₂O₇: Ba₂Cr₂O₇ is a strong oxidizing agent, it can react with many metals such as iron, copper, zinc,… to form salts and gases.

3. Common chemical equations involving Ba₂Cr₂O₇:
   Due to its strong oxidizing nature, Ba₂Cr₂O₇ often participates in oxidation reactions. For example, the reaction with Iron (Fe) is: 6Fe + Ba₂Cr₂O₇ + 14H₂O -> 2Ba(OH)₂ + 3Fe₂O₃ + 2Cr(OH)₃.

4. Preparation of Ba₂Cr₂O₇:

4.1 Laboratory preparation of Ba₂Cr₂O₇: Ba₂Cr₂O₇ can be prepared from Barium hydroxide and Dicromic acid.
4.2 Industrial preparation of Ba₂Cr₂O₇: Industrially, Ba₂Cr₂O₇ is typically produced by separating Barium and Chromium ions from accompanying ores.