Exam (elaborations)
aqa A-level CHEMISTRY Paper 1 Inorganic and Physical Chemistry (7405/1) Question Paper June2023
- Institution
- AQA
aqa A-level CHEMISTRY Paper 1 Inorganic and Physical Chemistry (7405/1) Question Paper June2023
[Show more]
Content preview
aqaPlease write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
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 →
Turn over ►
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller masterguider. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £14.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76799 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now