2 P (s) + 3 Br2 (aq) → 2 PBr3 (l)

This is an oxidation-reduction (redox) reaction:

2 P0 - 6 e- → 2 PIII (oxidation)

6 Br0 + 6 e- → 6 Br-I (reduction)

P is a reducing agent, Br2 is an oxidizing agent.

Reactants:

  • P
    • Br2
      • Names: Bromine source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Molecular bromine source: NIOSH NPG, accessed: 2019-09-02
      • Appearance: Fuming red-to-brown liquid with pungent odour source: ICSC, accessed: 2019-09-04; Dark reddish-brown, fuming liquid with suffocating, irritating fumes. source: NIOSH NPG, accessed: 2019-09-02

    Products:

    • PBr3 – Phosphorus tribromide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
      • Other names: Phosphorus(III) bromide source: wikipedia, accessed: 2019-09-27, Phosphorous bromide source: wikipedia, accessed: 2019-09-27, Tribromophosphine source: wikipedia, accessed: 2019-09-27
      • Appearance: Clear, colourless liquid source: wikipedia, accessed: 2019-09-27