Halogen displacement reactions (Edexcel GCSE Chemistry): Flashcards
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What displaces a less reactive halogen from a compound?
What displaces a less reactive halogen from a compound?
A more reactive halogen
Type of reaction in halogen displacement
Type of reaction in halogen displacement
Redox reaction
What occurs simultaneously in redox reactions?
What occurs simultaneously in redox reactions?
Oxidation and reduction
What do halogens do with electrons in displacement?
What do halogens do with electrons in displacement?
Gain electrons (reduced)
What do halide ions do with electrons?
What do halide ions do with electrons?
Lose electrons (oxidised)
Is chlorine more or less reactive than bromine?
Is chlorine more or less reactive than bromine?
More reactive
What happens when is added to KBr solution?
What happens when is added to KBr solution?
Chlorine displaces bromine
What is chlorine reduced to in + KBr reaction?
What is chlorine reduced to in + KBr reaction?
Chloride ions ()
What are bromide ions oxidised to in + KBr?
What are bromide ions oxidised to in + KBr?
Bromine ()
Colour when bromine forms in displacement reaction
Colour when bromine forms in displacement reaction
Orange
What does colour change indicate in halogen tests?
What does colour change indicate in halogen tests?
Displacement has occurred
Which halogens can chlorine displace from salts?
Which halogens can chlorine displace from salts?
Bromine and iodine
Which halogen can bromine displace?
Which halogen can bromine displace?
Iodine only
Can bromine displace chlorine?
Can bromine displace chlorine?
No
Can astatine displace other halogens?
Can astatine displace other halogens?
No, it is the least reactive