What is SiH4? Important knowledge about SiH4.

1. Definition of SiH₄
   SiH₄, also known as Silane, is a compound of silicon and hydrogen. In English, it is called Silane. The atomic mass of SiH₄ is 32.11 amu. In a SiH₄ molecule, there is one silicon atom connected to four hydrogen atoms through covalent bonds. SiH₄ does not form ions.

2. Properties of SiH₄
   2.1 Physical properties of SiH₄
   SiH₄ is a colorless, odorless gas with no distinctive smell. It has no acid or base properties, so it has no pH value.

2.2 Chemical properties of SiH₄
SiH₄ is very flammable in air, producing water and silicon dioxide. It also reacts with halogens, resulting in halogenated silicon compounds.

3. Common chemical equations of SiH₄
   SiH₄ does not react with metals, acids, or salts. However, it is very easy to burn in air or react with halogens.

SiH₄ + 2O₂ -> SiO₂ + 2H₂O
SiH₄ + 2Cl₂ -> SiCl₄ + 2H₂

4. Preparation of SiH₄
   4.1 Laboratory preparation of SiH₄
   SiH₄ can be prepared in the laboratory by reacting silicon with hydrochloric acid in a hydrogen environment.

Si + 4HCl -> SiH₄ + 2Cl₂

4.2 Industrial preparation of SiH₄
Industrially, SiH₄ is produced through the reaction of silicon and hydrogen under high temperature conditions.