A-level
CHEMISTRY
Paper 1 Inorganic and Physical Chemistry
2023 AQA A-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical Chemistry Question
Paper
... [Show More] & Mark scheme (Merged) June 2023 [VERIFIED]
Monday 12 June 2023 Morning Time allowed: 2 hours
Materials
For this paper you must have:
• the Periodic Table/Data Booklet, provided as an insert (enclosed)
• a ruler with millimetre measurements
• a scientific calculator, which you are expected to use where appropriate.
Instructions
• Use black ink or black ball-point pen.
• Fill in the boxes at the top of this page.
• Answer all questions.
• 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
For Examiner’s Use
Question Mark
1
2
3
4
5
6
7
8
9
10
TOTAL
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 105.
2
Answer all questions in the spaces provided.
0 1This 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 . 2The 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 . 3Suggest why the oxidation state of chromium is zero in Cr(PF3)6
[1 mark]
Do not write
outside the
box
*02*
IB/M/Jun23/7405/1
3
The compound [Cr(NH3)4Cl2]Cl contains ammonia molecules.
0 1 . 4Deduce the oxidation state of chromium in [Cr(NH3)4Cl2]Cl
[1 mark]
0 1 . 5Name 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 [Show Less]