Chemistry Reference
In-Depth Information
d
The following reaction takes place when
methanol is burned:
2CH
3
OH(
l
) + 3O
2
(
g
) → 2CO
2
(
g
) + 4H
2
O(
g
)
Δ
H
=
−1452 kJ mol
−1
(ii)
How much heat energy would be liberated
by burning:
0.5 mol of methanol?
4.0 mol of methanol?
4 g of methanol?
(ii)
Calculate the volume of carbon dioxide
produced at room temperature and pressure
(rtp) when 16 g of methanol are burned.
(
A
r
: H = 1; C = 12; O = 16. One mole of
any gas at rtp occupies 24 dm
3
.)
6
Why is it safe for us to use vinegar, which contains
ethanoic acid, on food while it would be extremely
dangerous for us to use dilute nitric acid for the
same purpose?
7 a
Which carboxylic acids and alcohols would you
use to make the following esters?
(ii)
butyl methanoate
(ii)
ethyl methanoate
(iii)
propyl propanoate
b
Which esters would be made using the following
carboxylic acids and alcohols?
(ii)
ethanoic acid and butan-1-ol
(ii)
methanoic acid and methanol
(iii)
propanoic acid and butan-1-ol
c
Draw the structures of the following esters:
(ii)
ethyl methanoate
(ii)
propyl ethanoate.
d
Give two uses related to the class of compound
formed in this reaction.
8 a
Name the polymerisation process that is used to
make both nylon and Terylene.
b
Name the starting materials for making:
(ii)
nylon
(ii)
Terylene.
c
Give the name and formula of the small
molecule produced during the polymerisation
reactions to produce both nylon and Terylene.
d
Give the name of the chemical link that holds
together:
(ii)
nylon
(ii)
Terylene.
e
Give two uses for:
(ii)
nylon
(ii)
Terylene.
f
Explain the difference between the type of
polymerisation you have named in part
a
and
addition polymerisation.
9
What are the advantages and disadvantages of the
two methods used to manufacture ethanol:
a
by fermentation
b
by the hydration of ethene with steam?
