What is Li2Co2O4? Important knowledge about Li2Co2O4.

1. Definition of Li₂Co₂O₄

Li₂Co₂O₄, also known as Lithium cobalt(II) oxalate in English, is a chemical compound with the molecular formula Li₂Co₂O₄. In this formula, the number of Li (lithium) atoms is 2, the number of Co (cobalt) atoms is 2 and the number of O (oxygen) atoms is 4. The molecular weight of Li₂Co₂O₄ is about 228.88 g/mol.

1.4 Ion structure: The compound Li₂Co₂O₄ consists of 2 Li+ ions and one Co₂O₄- ion.

2. Properties of Li₂Co₂O₄

2.1 Physical properties of Li₂Co₂O₄: Li₂Co₂O₄ usually appears as a dark green powder, odorless, its pH cannot be determined because it is insoluble in water.

2.2 Chemical properties of Li₂Co₂O₄: Li₂Co₂O₄ is very stable at room temperature, it does not react with air. It can be decomposed by strong acids.

3. Common chemical equations of Li₂Co₂O₄

Since Li₂Co₂O₄ is insoluble in water and very stable, it does not react with metals, acids, nonmetals, or salts easily.

4. Preparation of Li₂Co₂O₄

Li₂Co₂O₄ is typically prepared through the reaction between oxalic acid and cobalt(II) hydroxide in an acidic environment. The reaction generates a large amount of heat, so it needs to be conducted at a low temperature.

Because Li₂Co₂O₄ is not commonly used in school laboratories, there are not many examples of its preparation in this setting. However, it is usually industrially produced by heating in a chemical furnace in an air-free environment.