Exam (elaborations)
AQA A LEVEL CHEMISTRY PAPER 1 INORGANIC PHYSICAL CHEMISTRYPAPER1 QP JUNE 2021
- Module
- Institution
AQA A LEVEL CHEMISTRY PAPER 1 INORGANIC PHYSICAL CHEMISTRYPAPER1 QP JUNE 2021
[Show more]
Seller
Follow
millyphilip
Reviews received
Content preview
AQA A LEVEL CHEMISTRY PAPER 1 INORGANIC PHYSICAL CHEMISTRYPAPER1 QP JUNE 2021
Please 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
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 outside
6
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 7
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
want to be marked. TOTAL
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 105.
*JUN217405101*
IB/M/Jun21/E9 7405/1
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 This question is about enthalpy changes for calcium chloride and
magnesium chloride.
0 1 . 1 State the meaning of the term enthalpy change.
[1 mark]
Figure 1 shows an incomplete Born–Haber cycle for the formation of calcium chloride.
Figure 1
0 1 . 2 Complete Figure 1 by writing the formulas, including state symbols, of the
appropriate species on each of the three blank lines.
[3 marks]
*02*
IB/M/Jun21/7405/1
, 3
Do not write
outside the
0 1 . 3 Table 1 shows some enthalpy data. box
Table 1
Enthalpy change
/ kJ mol–1
Enthalpy of formation of calcium chloride –795
Enthalpy of atomisation of calcium +193
First ionisation energy of calcium +590
Second ionisation energy of calcium +1150
Enthalpy of atomisation of chlorine +121
Electron affinity of chlorine –364
Use Figure 1 and the data in Table 1 to calculate a value for the
enthalpy of lattice dissociation of calcium chloride.
[2 marks]
Enthalpy of lattice dissociation kJ mol–1
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun21/7405/1
, 4
Do not write
outside the
0 1 . 4 Magnesium chloride dissolves in water. box
Give an equation, including state symbols, to represent the process that occurs when
the enthalpy of solution of magnesium chloride is measured.
[1 mark]
0 1 . 5 Table 2 shows some enthalpy data.
Table 2
Enthalpy change
/ kJ mol–1
Enthalpy of lattice dissociation of MgCl2 +2493
Enthalpy of hydration of Mg2+(g) –1920
Enthalpy of hydration of Cl–(g) –364
Use your answer to Question 01.4 and the data in Table 2 to calculate a value for the
enthalpy of solution of magnesium chloride.
[2 marks]
Enthalpy of solution kJ mol–1
0 1 . 6 The enthalpy of hydration of Ca2+(g) is –1650 kJ mol–1
Suggest why this value is less exothermic than that of Mg2+(g)
[2 marks]
11
*04*
IB/M/Jun21/7405/1
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 millyphilip. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £7.75. 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