Halogen Displacement Reactions Flashcards
1
Q
What happens in a halogen displacement reaction?
A
A more reactive halogen will displace a less reactive one
2
Q
When chlorine is displaced from a metal halide salt solution during a displacement reaction, what colour will the solution turn?
A
Pale green
3
Q
When bromine is displaced from a metal halide salt solution during a displacement reaction, what colour will the solution turn?
A
Orange
4
Q
When iodine is displaced from a metal halide salt solution during a displacement reaction, what colour will the solution turn?
A
Brown
5
Q
(Exam-style question)
A
- Chlorine and bromine are more reactive than iodine
- In reaction of chlorine with potassium iodide, chlorine displaces iodine
- In reaction of bromine with potassium iodide, bromine displaces iodine
- Iodine cannot displace iodine from its compound
- Brown colour of final mixture is due to iodine
6
Q
Halogen displacement reactions are redox reactions.
What does this mean?
A
In the reaction:
- Halogens gain electrons (reduction)
- Halide ions lose electrons (oxidation)
7
Q
(Exam-style question)
A
Bromine is reduced because it gains electrons
