Photo AI
This question is about hydrocarbons - AQA - GCSE Chemistry - Question 3 - 2020 - Paper 2
Question 3
This question is about hydrocarbons. Hexane and hexene are hydrocarbons containing six carbon atoms in each molecule. Hexane is an alkane and hexene is an alkene. ... show full transcript
Worked Solution & Example Answer:This question is about hydrocarbons - AQA - GCSE Chemistry - Question 3 - 2020 - Paper 2
Step 1
Step 2
Step 3
Compare ethane with ethene.
Answer
Structure and Bonding
Both ethane and ethene are hydrocarbons, but they differ in structure:
- Ethane contains two carbon atoms per molecule and has single C–C bonds.
- Ethene also contains two carbon atoms but has a double C=C bond, allowing for different reactions.
- Both contain C–H bonds, making them relatively small molecules.
Reactions
- Both react with oxygen in complete combustion reactions to produce water and carbon dioxide.
- In incomplete combustion, both produce water, carbon monoxide, and carbon; however, ethene undergoes reactions with bromine water, decolorizing it, while ethane does not.