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AQA AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry 2023 Complete Guide. A+ Latest $11.49   Add to cart
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AQA AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry 2023 Complete Guide. A+ Latest
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AQA AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry 2023 Complete Guide. A+ LatestAQA AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry 2023 Complete Guide. A+ Latest

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  • September 29, 2023
  • 39
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

Subjects

  • ch1056
  • 2023
  • as chemistry
  • aas level
  • organicphysical practical chemistry
  • university of leicester

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  • Organic/Physical Practical Chemistry
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lOMoARcPSD|30878495




A-Level Chemistry

AQA

Paper 1 – Inorganic and Physical Chemistry

Predicted Paper 2022
Name ……………….
Date …………………

2 hours allowed

Possible Marks
Question
marks gained
1 9
2 8
3 8
4 14
5 15
6 14
7 10
8 8
9 19
Total 105


The Advanced Information from the exam board gives us a broad overview
of what is covered in the exam. The information was given in ranked order,
and this has been reflected in the mark allocation and topics on this paper.
There are questions in this paper that cover topics that are not listed by the
exam board. These are in the multiple-choice section and a few marks in low
tariff and synoptic questions – this is exactly what you should expect in the
exam.




Primrose Kitten – YouTube Tutorials for GCSE and A-Level

, lOMoARcPSD|30878495




01 Propanoic acid dissociates slightly in aqueous solution.


01.1 Write an expression for the acid dissociation constant Ka for propanoic
acid.
[1 mark]
……………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………


01.2 The Ka value of propanoic acid is 1.35×10-5 moldm-3.

A buffer solution is prepared containing 2.15×10-2 mol of propanoic
acid and 1.50×10-2 mol of sodium propanoate in 1.00 dm3 solution.

I. Calculate the pH of the buffer solution 25°C.
[3 marks]
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………

II. A small amount of aqueous NH3(aq) is added to the buffer solution.
Explain how the buffer solution would respond to the added NH3(aq).

[2 marks]
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………

III. The student adds 0.25 g of Mg to 1.00 dm3 of the buffer solution.
Calculate the pH of the new buffer solution. (Mr = 24.3 g/mol)

[3 marks]
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………

Primrose Kitten – YouTube Tutorials for GCSE and A-Level

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02 A sample of X was analysed by mass spectrometry.


The following results were obtained for the atoms of X in the sample.

Relative isotopic mass Relative abundance


16 99.82
17 0.04
18 0.14



02.1 Calculate the relative atomic mass of element X.

Give your answer to two decimal places.
[2 marks]


…………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………

02.2 Identify the element X.
[1 mark]


…………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………


16
02.3 The most abundant isotope of the X in that sample was X.

I. Write the formulae of two different ions which might be formed in
the mass spectrometer.
[2 marks]
………………………………………………………………………………………………………………
………………………………………………………………………………………………………………
………………………………………………………………………………………………………………

Primrose Kitten – YouTube Tutorials for GCSE and A-Level

, lOMoARcPSD|30878495




II. Which part of the mass spectrometer separates ions from different
mass?
[1 mark]


………………………………………………………………………………………………………………
………………………………………………………………………………………………………………



III. State how vapourised atoms of X are converted into X+ ions in a
mass spectrometer.
[2 marks]


………………………………………………………………………………………………………………
………………………………………………………………………………………………………………
………………………………………………………………………………………………………………




Primrose Kitten – YouTube Tutorials for GCSE and A-Level

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