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 3
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. Section B
• If you need extra space for your answer(s), use the lined pages at the end of
TOTAL
this book. Write the question number against your answer(s).
• Show all your working.
• Do all rough work in this book. Cross through any work you do not want
to be marked.
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 90.
Advice
• You are advised to spend 70 minutes on Section A and 50 minutes on Section B.
7405/3
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, 2
Do not write
outside the
Section A box
Answer all questions in the spaces provided.
0 1 A student prepared methyl ethanoate using methanol and ethanoic acid.
● Equal moles of methanol and ethanoic acid were mixed.
● Concentrated sulfuric acid was added dropwise while cooling.
● The mixture was refluxed for 20 minutes.
● The product was distilled and collected between 57–63 °C.
● Sodium carbonate solution was used to wash the crude product.
● The ester was dried using anhydrous calcium chloride and redistilled.
Figure 1
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, 3
Do not write
outside the
0 1 . 1 box
Why is the reaction mixture refluxed?
[2 marks]
0 1 . 2
Explain the role of sulfuric acid in this reaction.
[2 marks]
0 1 . 3
Write the balanced equation for the reaction.
[2 marks]
0 1 . 4
Why is sodium carbonate used?
[2 marks]
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, 4
Do not write
outside the
box
0 1 . 5
Why must the product be dried?
[2 marks]
0 1 . 6
Explain why the product is redistilled.
[2 marks]
0 1 . 7
The student obtained 30.0 g methyl ethanoate from 38.0 g methanol.
Calculate the percentage yield.
[4 marks]
16
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Centre number Candidate number
Surname
Forename(s)
Candidate signatuure
I declare this is my own work.
A-level Summer 2026
CHEMISTRY Predicted
Paper 3
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. Section B
• If you need extra space for your answer(s), use the lined pages at the end of
TOTAL
this book. Write the question number against your answer(s).
• Show all your working.
• Do all rough work in this book. Cross through any work you do not want
to be marked.
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 90.
Advice
• You are advised to spend 70 minutes on Section A and 50 minutes on Section B.
7405/3
for more papers: tyrionpapers.com
, 2
Do not write
outside the
Section A box
Answer all questions in the spaces provided.
0 1 A student prepared methyl ethanoate using methanol and ethanoic acid.
● Equal moles of methanol and ethanoic acid were mixed.
● Concentrated sulfuric acid was added dropwise while cooling.
● The mixture was refluxed for 20 minutes.
● The product was distilled and collected between 57–63 °C.
● Sodium carbonate solution was used to wash the crude product.
● The ester was dried using anhydrous calcium chloride and redistilled.
Figure 1
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, 3
Do not write
outside the
0 1 . 1 box
Why is the reaction mixture refluxed?
[2 marks]
0 1 . 2
Explain the role of sulfuric acid in this reaction.
[2 marks]
0 1 . 3
Write the balanced equation for the reaction.
[2 marks]
0 1 . 4
Why is sodium carbonate used?
[2 marks]
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, 4
Do not write
outside the
box
0 1 . 5
Why must the product be dried?
[2 marks]
0 1 . 6
Explain why the product is redistilled.
[2 marks]
0 1 . 7
The student obtained 30.0 g methyl ethanoate from 38.0 g methanol.
Calculate the percentage yield.
[4 marks]
16
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