Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatuure
I declare this is my own work.
A-level Summer 2026
CHEMISTRY Predicted
Paper 2 Organic and Physical Chemistry
Afternoon Time allowed: 2 hours
Materials
For Examiner’s Use
For this paper you must have:
• The Periodic Table/Data Booklet, provided as an insert (enclosed) Question Mark
• a ruler with millimetre measurements
1
• a scientific calculator, which you are expected to use where appropriate.
2
Instructions 3
• Use black ink or black ball-point pen. 4
• Fill in the boxes at the top of this page.
5
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write 6
outside the box around each page or on blank pages. 7
• If you need extra space for your answer(s), use the lined pages at the end of 8
this book. Write the question number against your answer(s).
9
• Show all your working.
• Do all rough work in this book. Cross through any work you do not want 10
to be marked.
TOTAL
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 105.
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7405/2
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 The Haber process is used to manufacture ammonia on an industrial scale.
Nitrogen reacts with hydrogen according to the equation:
N2(g)+3H2(g)=2NH3(g)
Ammonia formation is exothermic and the reaction takes place in the presence of an
0 1 . 1iron Explain,
catalyst.
using Le Chatelier’s principle, why decreasing the temperature increases
the equilibrium yield of ammonia.
[2 marks]
0 1 . 2 Explain how changing the temperature and pressure affects the rate at which
equilibrium is reached in the Haber process, in terms of the energies and
collisions of particles.
[4 marks]
for more papers: tyrionpapers.com
, Do not write
outside the
box
0 1 . 3 Industrial ammonia manufacture uses a temperature of about 450 °C, even
though a lower temperature gives a higher equilibrium yield.
Explain why a much lower temperature is not used
[2 marks]
0 1 . 4 Explain why extremely high pressures (above 350 atm) are not normally used in
the Haber process
[2 marks]
0 1 . 5 In a certain country, 6.0 million tonnes of ammonia were produced in one year.
The production cost was $180 per tonne.
Calculate the total cost of ammonia production for that year.
[1 mark]
for more papers: tyrionpapers.com
Centre number Candidate number
Surname
Forename(s)
Candidate signatuure
I declare this is my own work.
A-level Summer 2026
CHEMISTRY Predicted
Paper 2 Organic and Physical Chemistry
Afternoon Time allowed: 2 hours
Materials
For Examiner’s Use
For this paper you must have:
• The Periodic Table/Data Booklet, provided as an insert (enclosed) Question Mark
• a ruler with millimetre measurements
1
• a scientific calculator, which you are expected to use where appropriate.
2
Instructions 3
• Use black ink or black ball-point pen. 4
• Fill in the boxes at the top of this page.
5
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write 6
outside the box around each page or on blank pages. 7
• If you need extra space for your answer(s), use the lined pages at the end of 8
this book. Write the question number against your answer(s).
9
• Show all your working.
• Do all rough work in this book. Cross through any work you do not want 10
to be marked.
TOTAL
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 105.
for more papers: tyrionpapers.com
7405/2
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 The Haber process is used to manufacture ammonia on an industrial scale.
Nitrogen reacts with hydrogen according to the equation:
N2(g)+3H2(g)=2NH3(g)
Ammonia formation is exothermic and the reaction takes place in the presence of an
0 1 . 1iron Explain,
catalyst.
using Le Chatelier’s principle, why decreasing the temperature increases
the equilibrium yield of ammonia.
[2 marks]
0 1 . 2 Explain how changing the temperature and pressure affects the rate at which
equilibrium is reached in the Haber process, in terms of the energies and
collisions of particles.
[4 marks]
for more papers: tyrionpapers.com
, Do not write
outside the
box
0 1 . 3 Industrial ammonia manufacture uses a temperature of about 450 °C, even
though a lower temperature gives a higher equilibrium yield.
Explain why a much lower temperature is not used
[2 marks]
0 1 . 4 Explain why extremely high pressures (above 350 atm) are not normally used in
the Haber process
[2 marks]
0 1 . 5 In a certain country, 6.0 million tonnes of ammonia were produced in one year.
The production cost was $180 per tonne.
Calculate the total cost of ammonia production for that year.
[1 mark]
for more papers: tyrionpapers.com
