AS
CHEMISTRY 7404/1 ACTUAL 2025 PAPER
MERGED WITH MARK SCHEME
Paper 1 Inorganic 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 1 Inorganic and Physical Chemistry
Tuesday 13 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) 1
• a ruler with millimetre measurements
• 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.
*
Jun257404101* tyrionpapers.com 7404/1
IB/M/Jun25/G4002/V6
Section A
Answer all questions in this section.
tyrionpapers.com
IB/M/Jun25/7404/1
, 3
Do not write outside the
box
0 1 This question is about the extraction of titanium.
The first stage in the extraction of titanium is the formation of titanium(IV)
chloride, TiCl4
TiO2(s) + 2 C(s) + 2 Cl2(g) ⟶ TiCl4(l) + 2 CO(g)
. 0 1 1 Calculate the percentage atom economy to form TiCl4 in this first stage of the
extraction.
[2 marks]
0 1 Percentage atom economy
.2 Suggest one economic advantage of using a process with a high
percentage atom economy.
[1 mark]
Turn over ►
tyrionpapers.com
IB/M/Jun25/7404/1
, 4
Do not
write
outside the
box
*02*
tyrionpapers.com
IB/M/Jun25/7404/1
CHEMISTRY 7404/1 ACTUAL 2025 PAPER
MERGED WITH MARK SCHEME
Paper 1 Inorganic 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 1 Inorganic and Physical Chemistry
Tuesday 13 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) 1
• a ruler with millimetre measurements
• 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.
*
Jun257404101* tyrionpapers.com 7404/1
IB/M/Jun25/G4002/V6
Section A
Answer all questions in this section.
tyrionpapers.com
IB/M/Jun25/7404/1
, 3
Do not write outside the
box
0 1 This question is about the extraction of titanium.
The first stage in the extraction of titanium is the formation of titanium(IV)
chloride, TiCl4
TiO2(s) + 2 C(s) + 2 Cl2(g) ⟶ TiCl4(l) + 2 CO(g)
. 0 1 1 Calculate the percentage atom economy to form TiCl4 in this first stage of the
extraction.
[2 marks]
0 1 Percentage atom economy
.2 Suggest one economic advantage of using a process with a high
percentage atom economy.
[1 mark]
Turn over ►
tyrionpapers.com
IB/M/Jun25/7404/1
, 4
Do not
write
outside the
box
*02*
tyrionpapers.com
IB/M/Jun25/7404/1
