What is PBr5? Important knowledge about PBr5.

  1. Definition of PBr5
    1.1 The common name for PBr5 is Phosphorus pentabromide.
    1.2 PBr5 consists of 1 Phosphorus (P) atom and 5 Bromine (Br) atoms.
    1.3 The atomic mass of PBr5 is about 430.49 g/mol.
    1.4 In PBr5, phosphorus has an oxidation state of +5. Phosphorus forms 5 covalent bonds with 5 bromine atoms.

  2. Properties of PBr5
    2.1 Physical properties:

    • PBr5 is a solid, colorless crystal under normal conditions.
    • It does not have a distinctive smell.
    • The pH of PBr5 is not determined as it is not a liquid.
      2.2 Chemical properties:
    • PBr5 easily decomposes in humid air into HBr and phosphorus(V) oxide.
    • PBr5 can also react with water to form hydrobromic acid and phosphoric acid.

  3. The common chemical equations involving PBr5 mainly relate to reactions with water, alcohol, phenol, and amine.

  4. Synthesis of PBr5
    4.1 Laboratory synthesis of PBr5:

    • The reaction between red phosphorus and bromine.
      4.2 Industrial synthesis of PBr5 is not widely used due to lack of large demand in the industry.

Leave a Comment