HW Unit 2.2 – Everyday Consumer Products
PART 1
1. Which of the following represents and ester?
(1)
2. Which of the following is an isomer of the compound below?
(1)
3. The first three members of the alkanone series are shown below:
What is the general formula of the series?
A.
B.
C.
D.
CnH2n-2O
CnH2nO
CnH2n+1O
CnH2n+2O
(1)
4. Which of the following alkanols has a formula mass of 46?
A.
B.
C.
D.
(1)
Methanol
Ethanol
Propan-1ol
Propan-2-ol
5. The method used to make ethanol from glucose is:
A.
B.
C.
D.
(1)
Distillation
Fermentation
Cracking
Hydrolysis
6. Which of the following is the structural formula for propyl ethanoate?
(1)
7. The structure of a molecule is shown below.
(1)
The above molecule is an example of:
A.
B.
C.
D.
A saturated alcohol
An unsaturated alcohol
A saturated carboxylic acid
An unsaturated carboxylic acid
8. Which of the following statements is true? (You may wish to consult your data booklet).
As we ascend the homologous series from methanol to ethanol to propan-1-ol to butan-1-ol
the boiling points of the alkanols:
A. Increases
B. Decreases
C. Stays the dame
D. Show no trend
(1)
9. A solution containing two carbohydrates was tested as shown.
(1)
The solution could have contained:
A.
B.
C.
D.
Starch and glucose
Starch and sucrose
Glucose and maltose
Fructose and sucrose
10. The ester ethyl propanoate is made by reacting together:
A. ethanol and propanoic acid
B. methanol and propanoic acid
C. ethanol and butanoic acid
D. methanol and butanoic acid
(1)
PART 2
1. Thiols are organic compounds containing sulphur. Some thiols are listed in the table.
a) Ethanthiol is added to natural gas to give a smell.
Draw the full structural formula of ethanthiol.
(1)
b) Suggest a name for thiol X.
(1)
c) Thiols undergo complete combustion. Complete the word equation below.
Thiols + oxygen
carbon dioxide + water + ________________
(1)
2. Ethyl ethanoate can be made by reacting ethanoic acid and ethanol.
a) Name this type of chemical reaction.
(1)
b) A method of developing ethyl ethanoate from ethanol only has been
developed.
2C2H5OH
CH3COOC2H5 + 2X
i)
Name substance X.
(1)
ii)
This method was developed for use in countries where ethanol comes from
a renewable source. Name this source of ethanol.
(1)
3. The diagram shows how an ester with a “pear drops” smell can be made.
a) Name the ester formed in the reaction.
(1)
b) Why can this be described as a condensation reaction?
(1)
4a) Draw the full structural formula for propanoic acid.
(1)
b) The diagram below shows how an alkane can be prepared from an alkanoic acid.
The equation for the reaction is:
Alkanoic acid
Alkane + carbon dioxide
Complete the table to show which alkanoic acid could be used to produce butane.
Alkanoic acid
Alkane
ethanoic acid
methane
propanoic acid
ethane
(1)
butane
TOTAL = 20 MARKS