What is Na2HAsO4? Important knowledge about Na2HAsO4.

1. Definition of Na₂HAsO₄

Na₂HAsO₄ is Sodium hydrogen arsenate, also known as Dihydrogen arsenate sodium or Sodium arsenate dibasic in English. In its structure, two sodium atoms (Na) combine with one hydrogen atom (H), one arsenic atom (As) and four oxygen atoms (O). The molecular weight of Na₂HAsO₄ is 197.94 g/mol. It generates sodium ion Na+ and ion HAsO₄-2.

2. Properties of Na₂HAsO₄

2.1 Physical properties of Na₂HAsO₄

This substance is in solid form, white in color, odorless and has a neutral or slightly alkaline PH.

2.2 Chemical properties of Na₂HAsO₄

Na₂HAsO₄ is a strong oxidizing agent and can react with reducing agents to form Arsenic.

3. Common chemical equations of Na₂HAsO₄

The common chemical equations of Na₂HAsO₄ usually involve redox reactions. For example, Na₂HAsO₄ can react with metals such as Cu, Fe, Zn to form Arsenic and the corresponding salt.

4. Preparation of Na₂HAsO₄

4.1 Laboratory preparation of Na₂HAsO₄

Na₂HAsO₄ can be prepared by fusing Arsenic trioxide (As₂O₃) with Sodium hydroxide (NaOH) at a fixed temperature.

4.2 Industrial preparation of Na₂HAsO₄

In industry, Na₂HAsO₄ is typically produced from the reaction of Arsenic with nitric acid (HNO₃), which then reacts with Sodium hydroxide to form Na₂HAsO₄.