CHAPTER 1. ORGANICMOLECULES 1.11
(a) To which homologous series do the following compounds be-
long?
i. Compounds 1,2 and 3
ii. Compounds 6,7 and 8
(b) Which of the abovecompounds are gases atroom temperature?
(c) What causes the trend of increasing boiling points of compounds
1 to 5?
(d) Despite the fact thatthe length of the carbonchain in compounds
8,9 and 10 is the same, the boiling point of propan-1,2,3-triol
is much higher than the boiling point of propan-1-ol. What is
responsible for this largedifference in boiling point?
(e) Give the IUPAC name and the structural formula of an isomer of
butane.
(f) Which one of the above substances is used as a reactant in the
preparation of the esterethylmethanoate?
(g) Using structural formulae, write an equation for the reaction which
produces ethylmethanoate.
(IEB 2004)
- Refer to the numbered diagrams below and then answer the questions
that follow.
HO C C C C H
O H H H
H H H
1
HO C C H
H H
H H
2
H C C C C H
H Br
H Br
3
H C C O C H
H O H
H
4
H
(a) Which one of the above compounds is produced from the fer-
mentation of starches and sugars in plant matter?
i. compound 1
ii. compound 2
iii. compound 3
iv. compound 4
(b) To which one of the following homologous series does com-
pound 1 belong?
i. esters
ii. alcohols
