What is Na2MoO4? Important knowledge about Na2MoO4.

1. Definition of Na₂MoO₄:
   Na₂MoO₄, also known as sodium molybdate, is a white, odorless solid. It is a salt of sodium and molybdic acid. The English name of this substance is Sodium Molybdate. In the Na₂MoO₄ molecule, there are 2 sodium atoms, 1 molybdenum atom, and 4 oxygen atoms. The atomic mass of Na₂MoO₄ is 205.92 g/mol. The structure of Na₂MoO₄ consists of sodium ions (Na+) and molybdate ions (MoO₄ 2-).

2. Properties of Na₂MoO₄:
   2.1 Physical properties of Na₂MoO₄: Na₂MoO₄ is a solid at room temperature, colorless, and odorless. Its PH level is very high, indicating that this substance is strongly alkaline.
   2.2 Chemical properties of Na₂MoO₄: Na₂MoO₄ has the ability to react with acids to form salts and water. It can also react with metals to form salts and hydrogen gas.

3. Common chemical equations related to Na₂MoO₄: As Na₂MoO₄ is a salt, it cannot react with other salts or non-metals. However, it can react with acids and metals. For example:

Na₂MoO₄ + H₂SO₄ -> Na₂SO₄ + H₂MoO₄
Na₂MoO₄ + 2HCl -> 2NaCl + H₂MoO₄

4. Preparation of Na₂MoO₄:
   4.1 Preparation of Na₂MoO₄ in the laboratory: Na₂MoO₄ is usually prepared by reacting molybdic acid with sodium hydroxide.
   4.2 Industrial preparation of Na₂MoO₄: On an industrial scale, Na₂MoO₄ is typically produced by liberating molybdenum from molybdenum ore using sodium hydroxide.