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June 2025 Edexcel: A Level Chemistry 9CH0/02 Paper 2 – Advanced
Organic and Physical Chemistry – Merged Question Paper & Mark Scheme
Exam Resource Summary
This June 2025 Edexcel A Level Chemistry 9CH0/02 document merges the
official question paper and mark scheme for Paper 2: Advanced Organic and
Physical Chemistry. It covers advanced topics such as organic reaction
mechanisms, spectroscopy, synthesis, thermodynamics, kinetics, and equilibria.
The merged format offers students a complete view of examiner expectations,
mark allocation, and effective response techniques. Each question is paired with
official marking guidance to support targeted revision, self-assessment, and the
development of analytical and problem-solving skills. An essential resource for
mastering the content and achieving top performance in the 2025 Edexcel A
Level Chemistry Paper 2 examination.
,Turn over
, Answer ALL questions.
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 This question is about mass spectrometry.
(a) Which molecule would not give a molecular ion peak with m/z = 74?
(1)
A C2H5COOH
B CHOCOOH
C CH2(OH)COOH
D CH3COOCH3
(b) The fragmentation pattern in a mass spectrum can be used to
distinguish between structural isomers.
Which m/z peak would be present in the mass spectrum of propanal,
CH3CH2CHO, but not in the mass spectrum of propanone, CH3COCH3?
DO NOT WRITE IN THIS AREA
(1)
A 15
B 29
C 43
D 59
(Total for Question 1 = 2 marks)
, DO NOT WRITE IN
3
■■■■ Turn over
June 2025 Edexcel: A Level Chemistry 9CH0/02 Paper 2 – Advanced
Organic and Physical Chemistry – Merged Question Paper & Mark Scheme
Exam Resource Summary
This June 2025 Edexcel A Level Chemistry 9CH0/02 document merges the
official question paper and mark scheme for Paper 2: Advanced Organic and
Physical Chemistry. It covers advanced topics such as organic reaction
mechanisms, spectroscopy, synthesis, thermodynamics, kinetics, and equilibria.
The merged format offers students a complete view of examiner expectations,
mark allocation, and effective response techniques. Each question is paired with
official marking guidance to support targeted revision, self-assessment, and the
development of analytical and problem-solving skills. An essential resource for
mastering the content and achieving top performance in the 2025 Edexcel A
Level Chemistry Paper 2 examination.
,Turn over
, Answer ALL questions.
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 This question is about mass spectrometry.
(a) Which molecule would not give a molecular ion peak with m/z = 74?
(1)
A C2H5COOH
B CHOCOOH
C CH2(OH)COOH
D CH3COOCH3
(b) The fragmentation pattern in a mass spectrum can be used to
distinguish between structural isomers.
Which m/z peak would be present in the mass spectrum of propanal,
CH3CH2CHO, but not in the mass spectrum of propanone, CH3COCH3?
DO NOT WRITE IN THIS AREA
(1)
A 15
B 29
C 43
D 59
(Total for Question 1 = 2 marks)
, DO NOT WRITE IN
3
■■■■ Turn over
