What is BH3? Important knowledge about BH3.

1. Define BH₃

BH₃, also known as borane, is a chemical compound of boron and hydrogen. In English, it is called borane. BH₃ has a molecular weight of 13.83 g/mol. The molecular structure of BH₃ consists of one boron atom linked to three hydrogen atoms. BH₃ does not form ions.

2. Characteristics of BH₃

2.1 Physical properties of BH₃

BH₃ is a gas in its normal form. This substance is colorless and odorless. It is not acidic, so the pH cannot be determined.

2.2 Chemical properties of BH₃

BH₃ is a fairly reactive substance. It can react with air, forming B₂H₆ and B(OH)₃. It can also react with water, forming boron, hydrogen, and boronic acid.

3. Common chemical equations of BH₃

BH₃ does not react with metals, acids, or non-metals. However, it can react with salts. For example:

2 BH₃ + 6NaCl -> 2BCl₃ + 3H₂ + 6Na

4. Synthesis of BH₃

4.1 Laboratory synthesis of BH₃

There are a few ways to synthesize BH₃ in the laboratory, such as the reaction of boron trichloride with hydrogen:

BCl₃ + 3H₂ -> BH₃ + 3HCl

4.2 Industrial synthesis of BH₃

On an industrial scale, BH₃ is typically produced from the reaction of borax with sulfuric acid, then reduced with hydrogen:

Na₂B₄O₇ + H₂SO₄ + 5H₂ -> 2BH₃ + Na₂SO₄ + 7H₂O