AQA_2024: A-level 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 signat ure
I declare this is my own work.
A-level
CHEMISTRY
Paper 2 Organic and Physical Chemistry
Tuesday 18 June 2024 Morning 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 outside 6
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).
All working must be shown. 9
Do all rough work in this book. Cross through any work you do not want to 10
be marked. 11
Information TOTAL
The marks for questions are shown in brackets.
The maximum mark for this paper is 105.
,For A-level Chemistry Paper 2 (Organic and Physical Chemistry), focus on the following key areas:
1. Organic Chemistry Basics:
Functional Groups: Be familiar with common functional groups like alcohols, aldehydes, ketones,
carboxylic acids, alkenes, halogenoalkanes, and amines. Understand their properties and reactions.
Isomerism: Focus on structural isomerism (different connectivity of atoms) and stereoisomerism
(same connectivity, different spatial arrangement), including cis-trans and optical isomerism.
2. Reactions of Organic Compounds:
Alkanes: Understand reactions like substitution with halogens (free radical mechanism) and
combustion.
Alkenes: Study electrophilic addition reactions like hydrogenation, halogenation, hydration, and
hydrohalogenation. Understand Markovnikov's Rule.
3. Organic Mechanisms:
Nucleophilic Substitution (SN1 & SN2): Focus on the mechanisms of nucleophilic substitution for
halogenoalkanes, factors influencing the mechanism (e.g., solvent, nucleophile strength), and how they
differ in primary, secondary, and tertiary halogenoalkanes.
Electrophilic Addition & Substitution: Be familiar with addition reactions of alkenes, and
electrophilic substitution in aromatic compounds (benzene).
4. Kinetics:
Rate of Reaction: Understand factors that affect the rate of reaction, such as concentration,
temperature, surface area, and catalysts.
Activation Energy: Study activation energy and its impact on reaction rates. Understand the
Arrhenius equation and how temperature affects the rate constant.
6. Thermodynamics:
Enthalpy: Understand the concepts of exothermic and endothermic reactions, and how to calculate
enthalpy changes using Hess’s Law and bond enthalpies.
Entropy: Study entropy and its role in determining the spontaneity of reactions (Gibbs free energy
equation, ΔG = ΔH - TΔS).
Gibbs Free Energy: Focus on calculating ΔG to determine whether a reaction is spontaneous under
certain conditions.
7. Redox Reactions:
Oxidation and Reduction: Know how to identify oxidation (loss of electrons) and reduction (gain of
electrons) in reactions. Understand the role of oxidizing agents and reducing agents.
Electrochemical Cells: Study standard electrode potentials and how to use them to predict the
direction of redox reactions and calculate cell potentials.
IB/M/Jun24/G4006/E6 7405/2
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 Propanone reacts with bromine in alkaline conditions.
CH3COCH3 + Br2 + OH– ⟶ CH3COCH2Br + Br – + H2O
The rate equation for this reaction is
Rate = k [CH3COCH3] [OH–]
0 1 . 1 Sketch a graph on the axes provided to show how, at constant temperature, the
concentration of bromine changes during this reaction.
[1 mark]
IB/M/Jun24/7405/2
, 3
Do not write
outside the
box
0 1 . 2 Table 1 shows the initial rate of this reaction for experiments using different mixtures
containing propanone, bromine and hydroxide ions.
Table 1
[CH3COCH3] [Br2] [OH–] Initial rate
Experiment
/ mol dm–3 / mol dm–3 / mol dm–3 / mol dm–3 s–1
1 1.50 × 10–2 2.50 × 10–2 2.50 × 10–2 2.75 × 10–11
2 1.50 × 10–2 2.50 × 10–2 8.25 × 10–11
3 3.75 × 10–3 5.00 × 10–2 1.00 × 10–1
Complete Table 1.
Use the data from experiment 1 to calculate the rate constant k for this reaction.
Give the units for the rate constant.
[5 marks]
k Units
Question 1 continues on the next page
Turn over ►
IB/M/Jun24/7405/2
Organic and Physical Chemistry.
(Merged Question Paper and Marking Scheme)
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signat ure
I declare this is my own work.
A-level
CHEMISTRY
Paper 2 Organic and Physical Chemistry
Tuesday 18 June 2024 Morning 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 outside 6
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).
All working must be shown. 9
Do all rough work in this book. Cross through any work you do not want to 10
be marked. 11
Information TOTAL
The marks for questions are shown in brackets.
The maximum mark for this paper is 105.
,For A-level Chemistry Paper 2 (Organic and Physical Chemistry), focus on the following key areas:
1. Organic Chemistry Basics:
Functional Groups: Be familiar with common functional groups like alcohols, aldehydes, ketones,
carboxylic acids, alkenes, halogenoalkanes, and amines. Understand their properties and reactions.
Isomerism: Focus on structural isomerism (different connectivity of atoms) and stereoisomerism
(same connectivity, different spatial arrangement), including cis-trans and optical isomerism.
2. Reactions of Organic Compounds:
Alkanes: Understand reactions like substitution with halogens (free radical mechanism) and
combustion.
Alkenes: Study electrophilic addition reactions like hydrogenation, halogenation, hydration, and
hydrohalogenation. Understand Markovnikov's Rule.
3. Organic Mechanisms:
Nucleophilic Substitution (SN1 & SN2): Focus on the mechanisms of nucleophilic substitution for
halogenoalkanes, factors influencing the mechanism (e.g., solvent, nucleophile strength), and how they
differ in primary, secondary, and tertiary halogenoalkanes.
Electrophilic Addition & Substitution: Be familiar with addition reactions of alkenes, and
electrophilic substitution in aromatic compounds (benzene).
4. Kinetics:
Rate of Reaction: Understand factors that affect the rate of reaction, such as concentration,
temperature, surface area, and catalysts.
Activation Energy: Study activation energy and its impact on reaction rates. Understand the
Arrhenius equation and how temperature affects the rate constant.
6. Thermodynamics:
Enthalpy: Understand the concepts of exothermic and endothermic reactions, and how to calculate
enthalpy changes using Hess’s Law and bond enthalpies.
Entropy: Study entropy and its role in determining the spontaneity of reactions (Gibbs free energy
equation, ΔG = ΔH - TΔS).
Gibbs Free Energy: Focus on calculating ΔG to determine whether a reaction is spontaneous under
certain conditions.
7. Redox Reactions:
Oxidation and Reduction: Know how to identify oxidation (loss of electrons) and reduction (gain of
electrons) in reactions. Understand the role of oxidizing agents and reducing agents.
Electrochemical Cells: Study standard electrode potentials and how to use them to predict the
direction of redox reactions and calculate cell potentials.
IB/M/Jun24/G4006/E6 7405/2
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 Propanone reacts with bromine in alkaline conditions.
CH3COCH3 + Br2 + OH– ⟶ CH3COCH2Br + Br – + H2O
The rate equation for this reaction is
Rate = k [CH3COCH3] [OH–]
0 1 . 1 Sketch a graph on the axes provided to show how, at constant temperature, the
concentration of bromine changes during this reaction.
[1 mark]
IB/M/Jun24/7405/2
, 3
Do not write
outside the
box
0 1 . 2 Table 1 shows the initial rate of this reaction for experiments using different mixtures
containing propanone, bromine and hydroxide ions.
Table 1
[CH3COCH3] [Br2] [OH–] Initial rate
Experiment
/ mol dm–3 / mol dm–3 / mol dm–3 / mol dm–3 s–1
1 1.50 × 10–2 2.50 × 10–2 2.50 × 10–2 2.75 × 10–11
2 1.50 × 10–2 2.50 × 10–2 8.25 × 10–11
3 3.75 × 10–3 5.00 × 10–2 1.00 × 10–1
Complete Table 1.
Use the data from experiment 1 to calculate the rate constant k for this reaction.
Give the units for the rate constant.
[5 marks]
k Units
Question 1 continues on the next page
Turn over ►
IB/M/Jun24/7405/2
