What is AsH4? Important knowledge about AsH4.

Definition of AsH₄:
1.1 The common name of AsH₄ is Phốtphin arsin. In English, it is known as Arsenous hydride or Arsenic hydride.
1.2 AsH₄ has an atomic mass of 78.
1.3 The average atomic mass is 77.95 g/mol.
1.4 The molecular structure of AsH₄ consists of one As atom and four H atoms. AsH₄ does not form ions.

Properties of AsH₄:
2.1 Physical properties: AsH₄ is a gas, colorless, with an unpleasant smell. The pH of AsH₄ is 7 – neutral.
2.2 Chemical properties: AsH₄ easily burns in the air to form As₂O₃ and H₂O. It also reacts with strong oxidizing agents.

Common chemical equations:
AsH₄ does not participate in reactions with metals, acids, nonmetals, or salts.

Preparation of AsH₄:
4.1 Laboratory preparation: AsH₄ can be prepared from the reaction between As₂O₃ and Zn/H2SO4.
4.2 Industrial preparation: AsH₄ is not produced on an industrial scale because it is very toxic and highly explosive. In industry, As compounds are typically used instead of AsH₄.