2 marksFunctional Group Analysis, Reactions and Mechanisms

CAPE Chemistry Unit 2 · 2010 · Paper 2 · Question 4(d)(ii)a)

Write the chemical equation for the cracking of octane, C8H18, into two hydrocarbon fragments containing the same number of carbon atoms.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

4(a)Explain why compounds A and B are structural isomers.[2 marks]
4(b)Name two functional groups present in both molecules A and B.[2 marks]
4(c)(i)Draw the displayed formula of compound A and circle the chiral carbon atom on the molecule.[2 marks]
4(c)(ii)Draw the geometrical isomers (cis and trans / E and Z) of compound B, and explain why B has no optical isomers.[3 marks]
4(d)(i)Explain what is meant by the term 'cracking'.[2 marks]
4(d)(ii)b)Describe a simple laboratory test to distinguish between the two hydrocarbon fragments formed from cracking octane.[2 marks]

More practice: the rest of this paper · more Functional Group Analysis, Reactions and Mechanisms questions · all CAPE Chemistry Unit 2 past papers