This question is about hydrocarbons.
Pentane and pentene are hydrocarbons containing five carbon atoms in each molecule. Pentane is an alkane and pentene is an alkene.
a.[2]
Match each hydrocarbon to its correct molecular formula from the list below:
- C5H8\text{C}_5\text{H}_8C5H8
- C5H10\text{C}_5\text{H}_{10}C5H10
- C5H12\text{C}_5\text{H}_{12}C5H12
- C5H14\text{C}_5\text{H}_{14}C5H14
b.[2]
Bromine water is added to separate samples of pentane and pentene. What would be observed in each case?
c.[6]
Butane is an alkane and but-1-ene is an alkene. Figure 1 shows the displayed structural formulae of butane and of but-1-ene.
Compare butane with but-1-ene. You should refer to:
- their structure and bonding
- their reactions.