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The structure of a molecule of propene is: H H \ / C = C / \ H CH₃ (a) Propene is an unsaturated hydrocarbon - Edexcel - GCSE Chemistry - Question 2 - 2015 - Paper 1
Question 2
The structure of a molecule of propene is: H H \ / C = C / \ H CH₃ (a) Propene is an unsaturated hydrocarbon. (i) Explain w... show full transcript
Worked Solution & Example Answer:The structure of a molecule of propene is: H H \ / C = C / \ H CH₃ (a) Propene is an unsaturated hydrocarbon - Edexcel - GCSE Chemistry - Question 2 - 2015 - Paper 1
Step 1
Explain what is meant by unsaturated hydrocarbon.
Answer
An unsaturated hydrocarbon is a type of hydrocarbon that contains at least one double or triple bond between carbon atoms. This means that in addition to carbon (C) and hydrogen (H), there are multiple bonds present that indicate the compound can bond with additional atoms, which sets it apart from saturated hydrocarbons that only consist of single bonds.
Step 2
Step 3
Describe what is seen when a sample of propene is shaken with bromine water.
Answer
When propene is shaken with bromine water, the brown color of the bromine water will disappear, resulting in a colorless solution. This indicates that an addition reaction has occurred, where bromine has reacted with the double bond in propene.