Reaction Summary
Reagents
- Hydrogen gas,
- (1 mol
per C=C)
Conditions
- Heat (~150 °C)
Catalyst
- Nickel,
(or Pt/Pd)
Chemical Equation
Equation
By-Products
- None
Observations
Observations
- No visible change (colourless liquid/solution throughout)
⚠️ 9701 Exam Notes / Pitfalls
Warning
- Catalytic hydrogenation reduces the C=C; with limited
the C=O is left. Excess/prolonged hydrogenation would also reduce the C=O ➔ primary alcohol. is no use here — it reduces C=O, not C=C. - Hydrogenation is not electrophilic addition — call it addition/catalytic hydrogenation.