Halogens

Halogens

1. Cl

   • cyclo + water = Pale green

2. Br

   • Cyclo + water = Orange

3. I

   • Cyclo = Violet
     • Water = Brown

4. Chlorine most reactive

   • Chlorine oxidises both Br and I
     • Cl2 + 2Br- --> 2Cl- + Br2
       • Water +cyclo turn orange
       • Cl2 + 2I- --> 2Cl- + I2
         • Water =brown , cyclo = violet

5. Bromine is more reactive than Iodine only

   • Br2 + 2I- --> 2Br- + I2
     • Water=brown, cyclo=violet