Question

The color change when magnesium bromide comes in contact with chlorine

Answer 1

Chlorine oxidizes bromide to bromine , when chlorinated water is added to a water solutions containing bromides, the solution turns into brown because of the formation of bromides.

Answer 2

When magnesium bromide comes in contact with chlorine, the colour changes from white to brown.

• Magnesium bromide is white in colour.

• When it comes in contact with chlorine, chlorine being more reactive than bromine, displaces it from its compound, and forms magnesium chloride.

• Bromine separates out, which gives a brown colour to the solution.

• Therefore, the colour of magnesium bromide changes from white to brown on coming in contact with chlorine.

• MgBr₂ (white) + Cl₂  →  MgCl₂ + Br₂ (brown)