Question 17
FA student uses the apparatus in the figure to break down liquid paraffin, which contains long chain alkanes.
Figure: The apparatus used by the student
a.[1]
Name the process taking place in the boiling tube.
b.[1]
Give the purpose of the broken pottery.
c.[1]
The student shakes the gas collected with bromine water. The bromine water changes from orange to colourless. What does this result show about the gas?
d.[1]
Suggest why the student must lift the delivery tube out of the water before turning off the Bunsen burner.
e.[1]
Give one reason why cracking is important to the oil industry.