AS
CHEMISTRY ACTUAL 2025 PAPER MERGED
WITH MARK SCHEME
Paper 2 Organic and Physical Chemistry
Please write clearly in block capitals.
Candidate number
Centre number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
AS
CHEMISTRY
Paper 2 Organic and Physical Chemistry
Tuesday 20 May 2025 Morning Time allowed: 1 hour 30 minutes
For Examiner’s Use
Materials
For this paper you must have: Question Mark
• the Periodic Table/Data Sheet, provided as an insert (enclosed)
• a ruler with millimetre measurements 1
• a scientific calculator, which you are expected to use where appropriate. 2
3
Instructions
• Use black ink or black ball-point pen. 4
• Fill in the boxes at the top of this page.
5
• Answer all questions.
6
7
Section B
TOTAL
, 2
Do not
write
outside the
box
• You must answer the questions in the spaces provided. Do not write outside the box around
each page or on blank pages.
• If you need extra space for your answer(s), use the lined pages at the end of this book. Write
the question number against your answer(s).
• All working must be shown.
• Do all rough work in this book. Cross through any work you do not want to be marked.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 80.
Advice
• You are advised to spend 65 minutes on Section A and 25 minutes on Section B.
*Jun257404201* 7404/2
IB/M/Jun25/G4002/V7
Section A
Answer all questions in this section.
IB/M/Jun25/7404/2
, 3
Do not write outside the
box
0 1 This question is about halogenoalkanes.
. 1 Halogenoalkanes undergo substitution reactions with nucleophiles such as
0 1 CN–, NH3 and OH–
Explain why halogenoalkanes react with nucleophiles.
. 2 2-Bromobutane reacts with ammonia to form CH3CH(NH2)CH2CH3
0 1
Complete the mechanism for this reaction.
2-Bromobutane reacts with KOH to give a mixture of products.
. 3 Identify the solvent that should be used to ensure that butan-2-ol is the
main organic product when 2-brombutane reacts with KOH
[1 mark]
0 1
Turn over ►
IB/M/Jun25/7404/2
, 4
Do not
write
outside the
box
*02*
IB/M/Jun25/7404/2
CHEMISTRY ACTUAL 2025 PAPER MERGED
WITH MARK SCHEME
Paper 2 Organic and Physical Chemistry
Please write clearly in block capitals.
Candidate number
Centre number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
AS
CHEMISTRY
Paper 2 Organic and Physical Chemistry
Tuesday 20 May 2025 Morning Time allowed: 1 hour 30 minutes
For Examiner’s Use
Materials
For this paper you must have: Question Mark
• the Periodic Table/Data Sheet, provided as an insert (enclosed)
• a ruler with millimetre measurements 1
• a scientific calculator, which you are expected to use where appropriate. 2
3
Instructions
• Use black ink or black ball-point pen. 4
• Fill in the boxes at the top of this page.
5
• Answer all questions.
6
7
Section B
TOTAL
, 2
Do not
write
outside the
box
• You must answer the questions in the spaces provided. Do not write outside the box around
each page or on blank pages.
• If you need extra space for your answer(s), use the lined pages at the end of this book. Write
the question number against your answer(s).
• All working must be shown.
• Do all rough work in this book. Cross through any work you do not want to be marked.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 80.
Advice
• You are advised to spend 65 minutes on Section A and 25 minutes on Section B.
*Jun257404201* 7404/2
IB/M/Jun25/G4002/V7
Section A
Answer all questions in this section.
IB/M/Jun25/7404/2
, 3
Do not write outside the
box
0 1 This question is about halogenoalkanes.
. 1 Halogenoalkanes undergo substitution reactions with nucleophiles such as
0 1 CN–, NH3 and OH–
Explain why halogenoalkanes react with nucleophiles.
. 2 2-Bromobutane reacts with ammonia to form CH3CH(NH2)CH2CH3
0 1
Complete the mechanism for this reaction.
2-Bromobutane reacts with KOH to give a mixture of products.
. 3 Identify the solvent that should be used to ensure that butan-2-ol is the
main organic product when 2-brombutane reacts with KOH
[1 mark]
0 1
Turn over ►
IB/M/Jun25/7404/2
, 4
Do not
write
outside the
box
*02*
IB/M/Jun25/7404/2
