Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate ure
signat
A-level
CHEMISTRY
Paper 2 Organic and Physical
Chemistry
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.
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 8
the end of this book. Write the question number against your 9
answer(s).
10
All working must be shown.
Do all rough work in this book. Cross through any work you do 11
not want to be marked. TOTAL
Information
The marks for questions are shown in brackets.
The maximum mark for this paper is 105.
,7405/2
, 2
Do not write
outside the
Answer all questions in the spaces box
provided.
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
0 1 .2 Table 1 shows the initial rate of this reaction for experiments using box
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
Centre Candidate
number number
Surname
Forename(s)
Candidate ure
signat
A-level
CHEMISTRY
Paper 2 Organic and Physical
Chemistry
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.
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 8
the end of this book. Write the question number against your 9
answer(s).
10
All working must be shown.
Do all rough work in this book. Cross through any work you do 11
not want to be marked. TOTAL
Information
The marks for questions are shown in brackets.
The maximum mark for this paper is 105.
,7405/2
, 2
Do not write
outside the
Answer all questions in the spaces box
provided.
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
0 1 .2 Table 1 shows the initial rate of this reaction for experiments using box
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
