Mini-Mock Unit 3 Aqa Gcse Chemistry Higher Tier Worksheet Page 9
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18Q19.
The structures shown are of the first three members of a homologous series of alcohols.
(a)
(i)
Draw a ring around the correct general formula for alcohols.
C
H
OH
C
H
OH
C
H
OH
n
2n+1
2n
2n+1
n
2n+2
(1)
(ii)
What is the formula of the functional group for alcohols?
(1)
(b)
Ethanol is the alcohol used in alcoholic drinks.
(i)
When ethanol dissolves in water the solution formed is not alkaline.
Tick (
) the reason why the solution formed is not alkaline.
(1)
Reason
Tick (
)
(ii)
Ethanol is used as a fuel because
ethanol burns in oxygen. Complete and
Ethanol can be used as a solvent.
balance the chemical equation for this
reaction.
Ethanol dissolves in water to form hydroxide ions.
C
H
OH
+
2
5
Ethanol has only covalent bonds in its molecule.
................O
→
2 CO
+
2
2
................
(2)
(c)
Ethanol can be oxidised to produce the compound shown.
(i)
Draw a ring around the correct answer to complete the sentence.
acidic.
When this compound dissolves in water, the solution formed is
alkaline.
neutral.
(1)
(ii)
Ethanol reacts with this compound to produce the organic compound shown.
C
H
OH
+
CH
COOH
→
CH
COOC
H
+
H
O
2
5
3
3
2
5
2
Complete the sentence.The type of organic compound produced is ................................. .
(1)
(Total 7 marks)
Page 9
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