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Hydrocarbons

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Question 12

A laboratory technician is verifying the contents of three unlabelled bottles containing liquid hydrocarbons, labelled U\mathbf{U}U, V\mathbf{V}V, and W\mathbf{W}W. The technician adds a few drops of orange-brown bromine water to a sample of each hydrocarbon and shakes the mixtures.

The technician's notebook shows the following results:

  • Hydrocarbon U\mathbf{U}U: the mixture remains orange-brown.
  • Hydrocarbon V\mathbf{V}V: the orange-brown mixture becomes colourless.
  • Hydrocarbon W\mathbf{W}W: the orange-brown mixture becomes colourless.

Compare the molecular structures of hydrocarbons U\mathbf{U}U, V\mathbf{V}V, and W\mathbf{W}W based on these observations, identifying whether they are saturated or unsaturated and what types of carbon-carbon bonds they contain.

[2]

Hydrocarbons Questions

  1. GCSE
  2. /Chemistry
  3. /Hydrocarbons

Practise Edexcel GCSE Chemistry Hydrocarbons with exam-style questions for Foundation and Higher tier. 34 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank