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aqa A-level CHEMISTRY Paper 1 Inorganic and Physical Chemistry (7405/1) Question Paper June2023 $18.76
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aqa A-level CHEMISTRY Paper 1 Inorganic and Physical Chemistry (7405/1) Question Paper June2023

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aqa A-level CHEMISTRY Paper 1 Inorganic and Physical Chemistry (7405/1) Question Paper June2023

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  • February 23, 2024
  • 34
  • 2023/2024
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A-level
CHEMISTRY
Paper 1 Inorganic and Physical Chemistry

7405/1
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
3
 Use black ink or black ball-point pen.
 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 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
this 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 not 10
want to be marked.
TOTAL
Information
 The marks for questions are shown in brackets.
 The maximum mark for this paper is 105.




official

,official

, 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]

, 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 chromium
in its +3 oxidation state.
[1 mark]


10
CrCl3 + 5 H2O →




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