AQA 2023 A-level CHEMISTRY7405/1 Paper 1 Inorganic and Physical Chemistry Question Paper + Mark scheme [MERGED] June 2023
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Course
AQA
Institution
AQA
AQA 2023 A-level CHEMISTRY7405/1 Paper 1 Inorganic and Physical Chemistry Question Paper + Mark scheme [MERGED] June
2023 Materials
For this paper you must have:
the Periodic Table/Data Booklet, provided as an insert (enclosed)
a ruler with millimetre measurements
a scientific calc...
AQA 2023 A-level CHEMISTRY7405/1 Paper 1 Inorganic and Physical Chemistry Question Paper + Mark scheme [MERGED] June
2023
Please write clearly in block capitals.
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I declare this is my own work.
A-level
CHEMT Y
ISR
Paper 1 Inorganic and Physical Chemistry
Monday 12 June 2023 Morning Time allowed: 2 hours
Materials
For this paper you must have: For Examiner’s Use
the Periodic Table/Data Booklet, provided as an insert (enclosed)
a ruler with millimetre measurements Question Mark
a scientific calculator, which you are expected to use where appropriate. 1
2
Instructions
Use black ink or black ball-point pen. 3
Fill in the boxes at the top of this page. 4
Answer all questions. 5
You must answer the questions in the spaces provided. Do not write outsidethe box
6
around each page or on blank pages.
If you need extra space for your answer(s), use the lined pages at the end ofthis 7
book. Write the question number against your answer(s). 8
All working must be shown. 9
Do all rough work in this book. Cross through any work you do notwant
to be marked. 10
TOTAL
*JUN237405101*
IB/M/Jun23/E9 7405/1
,Information
The marks for questions are shown in brackets.
The maximum mark for this paper is 105.
*JUN237405101*
IB/M/Jun23/E9 7405/1
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 This question is about complexes of the transition metal chromium.
0 1 . 1 State the meaning of the term transition metal complex.
[1 mark]
Cr(PF3)6 is a complex of chromium that contains molecules of PF3
0 1
.2 The electron pair repulsion theory can be used to predict the shape of a PF3 molecule.Draw the
shape of a PF3 molecule.
Include any lone pairs of electrons that influence the shape.
Name the shape.
[2 marks]
Shape
Name of shape
0 1 . 3 Suggest why the oxidation state of chromium is zero in Cr(PF3)6
[1 mark]
*02*
IB/M/Jun23/7405/1
, 3
Do not write
outside the
The compound [Cr(NH3)4Cl2]Cl contains ammonia molecules. box
0 1 . 4 Deduce the oxidation state of chromium in [Cr(NH3)4Cl2]Cl
[1 mark]
0 1 . 5 Name the type of bond between N and H in ammonia.
[1 mark]
0 1
.6 The compound [Cr(NH3)4Cl2]Cl contains a complex ion that shows isomerism.Draw
the two isomers of the complex ion.
State the type of isomerism shown.
[3 marks]
Isomer 1 Isomer 2
Type of isomerism
0 1 . 7 Complete the equation to show the formation of one complex that contains chromiumin its +3
oxidation state.
[1 mark]
CrCl3 + 5 H2O → 10
Turn over ►
*03*
IB/M/Jun23/7405/1
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