Multiple choice

Which of the following compounds is used in the conversion of alcohols to alkyl bromides?

  1. Phosphorus pentabromide

  2. Phosphorus tribromide

  3. Phosphorus trichloride

  4. Phosphorus trifluoride

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Phosphorus tribromide is a colourless liquid with the formula PBr3. It fumes in air due to hydrolysis and has a penetrating odour. It is widely used in a laboratory for the conversion of alcohols to alkyl bromides.