QUESTION 25 (4 marks)
But-2-ene can form structural isomers and geometric isomers.
a) Draw one structural isomer of but-2-ene and apply IUPAC rules to name this isomer.
[2 marks]
b) Draw one geometric isomer of but-2-ene and apply IUPAC rules to name this isomer.
[2 marks]
Note: If you make a mistake, cancel it by ruling a single diagonal line through your work and use the additional response space at the back of this book.
QCAA guide · typeset solution
QCAA sample response and mark allocation
25a) | IUPAC name: but-1-ene | • draws the structural formula of a structural isomer [1 mark] • identifies IUPAC name of the structural isomer [1 mark] |
25b) | IUPAC name: (E)-but-2-ene | • draws the structural formula of a geometric isomer [1 mark] • identifies IUPAC name of the geometric isomer [1 mark] |
QCAA sample response and marking criteria reproduced from the official guide.
Compare your working with the guide above.