How to Make Bromine Water in the Chemistry Lab

Written by charles clay
  • Share
  • Tweet
  • Share
  • Pin
  • Email
How to Make Bromine Water in the Chemistry Lab
Bromine is a liquid element that mixes readily with water. (Jupiterimages/Photos.com/Getty Images)

Bromine water is a dilute solution of bromine used as a reagent in a range of chemical experiments. While it can be made in a chemistry lab by mixing the fumes of liquid bromine directly with water, this requires the use of a fume hood and heavy protective clothing, and is not suitable for beginning chemistry classes. A more convenient method of making bromine water uses bleach and hydrochloric acid to break down sodium bromide, avoiding the hazard of handling pure liquid bromine.

Skill level:
Moderate

Other People Are Reading

Things you need

  • Glass bottle with screw top
  • Flask or beaker
  • 1.1g sodium bromide
  • 10.7ml 1 M hydrochloric acid
  • 7.6ml bleach
  • 32ml distilled water

Show MoreHide

Instructions

  1. 1

    Label the bottle "bromine water" or "Br 2 (aq)."

  2. 2

    Dissolve the sodium bromine in the hydrochloric acid, mixing the compounds in a flask or beaker. Pour the mixture into the glass bottle.

  3. 3

    Add the bleach to the mixture in the bottle. Cap the bottle and swirl it gently to mix the ingredients.

  4. 4

    Dilute the mixture with distilled water, swirling gently to mix.

Tips and warnings

  • Do not use scented or germicidal bleach for this solution. Check the label to ensure that the bleach is 100 per cent sodium hypochlorite.
  • Bromine water is corrosive and gives off hazardous fumes. Wear goggles and chemical-resistant gloves when mixing or working with bromine water, and only use bromine water in a well-ventilated area.
  • Keep bromine water capped when not in use to minimise the spread of fumes.

Don't Miss

Filter:
  • All types
  • Articles
  • Slideshows
  • Videos
Sort:
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the eHow.co.uk site, you consent to the use of cookies. For more information, please see our Cookie policy.