AQA_2024: AS Chemistry - Paper 2
Organic and Physical Chemistry.
(Merged Question Paper and Marking Scheme)
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatu re
I declare this is my own work.
AS
CHEMISTRY
Paper 2 Organic and Physical Chemistry
Tuesday 21 May 2024 Morning Time allowed: 1 hour 30 minutes
Materials For Examiner’s Use
For this paper you must have:
the Periodic Table/Data Sheet, 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.
6
You must answer the questions in the spaces provided. Do not write 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 Section B
this book. Write the question number against your answer(s).
All working must be shown. TOTAL
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
IB/M/Jun24/G4001/V7 7404/2
,For AS Chemistry Paper 2 (Organic and Physical Chemistry), focus on the following key areas:
1. Organic Chemistry Basics:
Bonding and Functional Groups: Understand the basic bonding in organic compounds, including
covalent bonding, sigma and pi bonds. Be familiar with common functional groups (e.g., alcohols,
alkenes, carboxylic acids, ketones, aldehydes, halogenoalkanes).
Isomerism: Study structural isomerism (different connectivity of atoms) and stereoisomerism (same
connectivity, different spatial arrangement), including cis-trans isomerism and optical isomerism.
2. Reactions of Organic Compounds:
Alkanes: Understand the properties and reactions of alkanes, particularly their combustion,
substitution reactions with halogens, and free radical mechanism.
Alkenes: Study the electrophilic addition reactions of alkenes, including hydrogenation,
halogenation, hydrohalogenation, and hydration. Understand the concept of Markovnikov’s Rule.
Aromatic Compounds (Benzene): Know the structure of benzene, the nature of electrophilic
substitution reactions in benzene, and reactions such as nitration, halogenation, and sulfonation.
3. Mechanisms of Organic Reactions:
Nucleophilic Substitution: Study SN1 and SN2 mechanisms, factors affecting these mechanisms (e.g.,
nucleophile strength, leaving group, solvent polarity), and how they apply to halogenoalkanes.
Electrophilic Addition and Substitution: Focus on the addition reactions of alkenes (e.g., hydrogen
halides, hydrogenation, halogenation) and electrophilic substitution in benzene.
4. Aromatic Compounds:
Structure of Benzene: Understand the delocalized π-electron structure of benzene, its stability, and
how it influences reactivity.
Reactions of Benzene: Study nitration, halogenation, and sulfonation as key electrophilic
substitution reactions in benzene.
5. Physical Chemistry:
Acid-Base Equilibria: Study the concepts of strong vs. weak acids/bases, pH calculations, and
equilibrium constant expressions (Ka, Kb).
Enthalpy Changes: Understand exothermic and endothermic reactions, and how to calculate
enthalpy changes using Hess's Law and bond enthalpies.
6. Redox Reactions:
Oxidation and Reduction: Know the principles of oxidation (loss of electrons) and reduction (gain of
electrons). Study redox reactions, including oxidizing agents, reducing agents, and how to balance
redox reactions.
Electrochemical Cells: Understand the concept of electrochemical cells, standard electrode
potentials, and how to predict redox reactions using cell potentials.
You are advised to spend about 65 minutes on Section A and 25 minutes on Section B.
IB/M/Jun24/G4001/V7 7404/2
, 2
Do not write
outside the
Section A box
Answer all questions in this section.
0 1 This question is about the analysis of organic compounds.
0 1 . 1 Table 1 shows the results of chemical tests on three organic compounds.
Complete the empty boxes in the table.
Table 1
Chemical test
Add bromine orange to
no visible change
water colourless
no visible change bubbles of gas no visible change
Warm with
Fehling’s no visible change no visible change
solution
[3 marks]
IB/M/Jun24/7404/2
, 3
Do not write
outside the
0 1 . 2 0.500 g of a hydrocarbon is analysed. box
The hydrocarbon contains 0.450 g of carbon.
Calculate the empirical formula of this hydrocarbon.
[3 marks]
Empirical formula 6
Turn over for the next question
Turn over ►
IB/M/Jun24/7404/2
Organic and Physical Chemistry.
(Merged Question Paper and Marking Scheme)
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatu re
I declare this is my own work.
AS
CHEMISTRY
Paper 2 Organic and Physical Chemistry
Tuesday 21 May 2024 Morning Time allowed: 1 hour 30 minutes
Materials For Examiner’s Use
For this paper you must have:
the Periodic Table/Data Sheet, 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.
6
You must answer the questions in the spaces provided. Do not write 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 Section B
this book. Write the question number against your answer(s).
All working must be shown. TOTAL
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
IB/M/Jun24/G4001/V7 7404/2
,For AS Chemistry Paper 2 (Organic and Physical Chemistry), focus on the following key areas:
1. Organic Chemistry Basics:
Bonding and Functional Groups: Understand the basic bonding in organic compounds, including
covalent bonding, sigma and pi bonds. Be familiar with common functional groups (e.g., alcohols,
alkenes, carboxylic acids, ketones, aldehydes, halogenoalkanes).
Isomerism: Study structural isomerism (different connectivity of atoms) and stereoisomerism (same
connectivity, different spatial arrangement), including cis-trans isomerism and optical isomerism.
2. Reactions of Organic Compounds:
Alkanes: Understand the properties and reactions of alkanes, particularly their combustion,
substitution reactions with halogens, and free radical mechanism.
Alkenes: Study the electrophilic addition reactions of alkenes, including hydrogenation,
halogenation, hydrohalogenation, and hydration. Understand the concept of Markovnikov’s Rule.
Aromatic Compounds (Benzene): Know the structure of benzene, the nature of electrophilic
substitution reactions in benzene, and reactions such as nitration, halogenation, and sulfonation.
3. Mechanisms of Organic Reactions:
Nucleophilic Substitution: Study SN1 and SN2 mechanisms, factors affecting these mechanisms (e.g.,
nucleophile strength, leaving group, solvent polarity), and how they apply to halogenoalkanes.
Electrophilic Addition and Substitution: Focus on the addition reactions of alkenes (e.g., hydrogen
halides, hydrogenation, halogenation) and electrophilic substitution in benzene.
4. Aromatic Compounds:
Structure of Benzene: Understand the delocalized π-electron structure of benzene, its stability, and
how it influences reactivity.
Reactions of Benzene: Study nitration, halogenation, and sulfonation as key electrophilic
substitution reactions in benzene.
5. Physical Chemistry:
Acid-Base Equilibria: Study the concepts of strong vs. weak acids/bases, pH calculations, and
equilibrium constant expressions (Ka, Kb).
Enthalpy Changes: Understand exothermic and endothermic reactions, and how to calculate
enthalpy changes using Hess's Law and bond enthalpies.
6. Redox Reactions:
Oxidation and Reduction: Know the principles of oxidation (loss of electrons) and reduction (gain of
electrons). Study redox reactions, including oxidizing agents, reducing agents, and how to balance
redox reactions.
Electrochemical Cells: Understand the concept of electrochemical cells, standard electrode
potentials, and how to predict redox reactions using cell potentials.
You are advised to spend about 65 minutes on Section A and 25 minutes on Section B.
IB/M/Jun24/G4001/V7 7404/2
, 2
Do not write
outside the
Section A box
Answer all questions in this section.
0 1 This question is about the analysis of organic compounds.
0 1 . 1 Table 1 shows the results of chemical tests on three organic compounds.
Complete the empty boxes in the table.
Table 1
Chemical test
Add bromine orange to
no visible change
water colourless
no visible change bubbles of gas no visible change
Warm with
Fehling’s no visible change no visible change
solution
[3 marks]
IB/M/Jun24/7404/2
, 3
Do not write
outside the
0 1 . 2 0.500 g of a hydrocarbon is analysed. box
The hydrocarbon contains 0.450 g of carbon.
Calculate the empirical formula of this hydrocarbon.
[3 marks]
Empirical formula 6
Turn over for the next question
Turn over ►
IB/M/Jun24/7404/2
