What is Pb4O? Important knowledge about Pb4O.

1. Definition of Pb₄O:

1.1 Names:
1.1.1 Common name: Pb₄O is not a valid chemical compound. Perhaps you are referring to PbO (lead monoxide) or Pb₃O₄ (red lead)?
1.1.2 English name: For PbO, it is called “lead monoxide” or “litharge”. Pb₃O₄ is called “minium” or “red lead”.

1.2 Atomic mass:
The atomic mass of Lead (Pb) is 207.2 and that of Oxygen (O) is 16.

1.3 Molecular mass:
For PbO, the molecular mass is 223.2; for Pb₃O₄, the molecular mass is 685.6.

1.4 Ion structure:
Both PbO and Pb₃O₄ have complex ion structures with crystal structures.

2. Properties of PbO or Pb₃O₄:

2.1 Physical properties:
PbO is solid, yellow or red, odorless, and has a neutral pH.
Pb₃O₄ is solid, red, odorless, and has a neutral pH.

2.2 Chemical properties:
Both substances are very stable in air and water but can react with strong acids to form salts and water.

3. Common chemical equations:

3.1 PbO + H₂SO₄ -> PbSO₄ + H₂O
3.2 Pb₃O₄ + 8HCl -> 3PbCl₂ + 4H₂O

4. Preparation:

4.1 PbO is prepared by heating lead in air.
4.2 Pb₃O₄ is prepared by heating PbO in air at 500 degrees Celsius.