QUESTION 21 (4 marks)
a) Identify whether 2-bromopropane is a saturated or unsaturated compound. Explain your reasoning.
[2 marks]
b) Determine whether 2-bromopropane is a primary, secondary or tertiary halogenoalkane. Explain your reasoning.
[2 marks]
QCAA guide · typeset solution
QCAA sample response and mark allocation
21a) | 2-bromopropane is saturated because it contains only single bonds. | • identifies 2-bromopropane is satured [1 mark] • indicates 2-bromopropane contains only single bonds [1 mark] |
21b) | 2-bromopropane is a secondary halogenoalkane, because the carbon that the bromine is attached to two carbon atoms. | • determines 2-bromopropane is a secondary halogenoalkane [1 mark] • explains that the bromine (halogen) is bonded to a carbon that is attached to two other carbon atoms [1 mark] |
QCAA sample response and marking criteria reproduced from the official guide.
Compare your working with the guide above.