13.3 - Alkene Reactions Flashcards
1
Q
What are the four types of addition reaction that an alkene can undergo
A
- Hydrogenation (+Hydrogen)
- Hydrogen Halides
- Hydration (+Steam)
- Halogenation (+Halogens)
2
Q
What are the conditions for hydrogenation?
A
- Nickel Catalyst
- Temp of 423K
3
Q
What is the general equation for hydrogenation
A
Alkene + H2 —> Alkane
4
Q
What is the test for unsaturation
A
If Bromine water decolourises, it is unsaturated
If it remains orange, it is saturated
5
Q
What are the conditions for alkenes + hydrogen halides?
A
- Alkenes react with gaseous hydrogen halides
- They react at room temperature
6
Q
For alkenes + hydrogen halides, what happens if the alkene is a gas/liquid?
A
- If liquid, the hydrogen halide is bubbled through it
- If gas, the gases are mixed
7
Q
What conditions are needed for hydration reactions?
A
- Presence of a phosphoric acid catalyst
- There are 2 possible products
