(SME) Reactivity of the Halogens Flashcards
When does halogen displacement occur?
When a more reactive halogen displaces a less reactive halogen from an aqueous solution of its halide.
What is the trend of reactivity of the halogens?
The reactivity increases as you more up the group.
What does the colour of the aqueous halide solution and organic layer show?
Which free halogen is present in solution.
What colour is an aqueous halide solution if chlorine is the free halide present?
Very pale green.
What colour is an aqueous halide solution if bromine is the free halide present?
Yellow.
What colour is an aqueous halide solution if iodine is the free halide present?
Brown.
What colour is the organic solvent layer if chlorine is the free halide present?
Colourless.
What colour is the organic solvent layer if bromine is the free halide present?
Yellow.
What colour is the organic solvent layer if iodine is the free halide present?
Purple.
How do you change a full equation into an ionic equation?
Take out the spectator ion.
What happens to the trend of the oxidising power in the halogens?
The oxidising power decreases going down the group as they get less reactive.
Why do the halogens get less reactive and the oxidising power decreases when you go down the group?
The atomic radius increases and shielding increases so there is less nuclear attraction to attract an electron.
