False. A less reactive halogen will not displace a more reactive halogen from an aqueous solution of its salt; the opposite is true.

Quick Scoop

  • In halogen displacement reactions, a more reactive halogen displaces a less reactive halogen from an aqueous solution of its halide (salt), not the other way around.
  • Reactivity of common Group 7 halogens decreases down the group: chlorine > bromine > iodine.
  • This means:
    • Chlorine can displace bromine and iodine from their salts.
* Bromine can displace iodine, but not chlorine.

* Iodine cannot displace chlorine or bromine from their salts.

So the statement

“a less reactive halogen will displace a more reactive halogen from an aqueous solution of its salt”

is FALSE , because only a more reactive halogen has enough oxidising power to push a less reactive halogen out of its compound in solution.

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