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OCR A Level Chemistry A H432/01 Periodic table, elements and physical chemistry June 2024 Exam Question paper Authentic Marking Scheme Attached $8.59   Add to cart

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OCR A Level Chemistry A H432/01 Periodic table, elements and physical chemistry June 2024 Exam Question paper Authentic Marking Scheme Attached

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  • OCR A-LEVEL CHEMISTRY
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  • OCR A-LEVEL CHEMISTRY

OCR A Level Chemistry A H432/01 Periodic table, elements and physical chemistry June 2024 Exam Question paper Authentic Marking Scheme Attached

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  • May 29, 2024
  • 67
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
  • OCR A-LEVEL CHEMISTRY
  • OCR A-LEVEL CHEMISTRY
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RevisionKing
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Monday 13 June 2022 – Morning
A Level Chemistry A
H432/01 Periodic table, elements and physical chemistry
Time allowed: 2 hours 15 minutes

You must have:
* 9 1 0 1 3 1 1 7 1 5 *




• the Data Sheet for Chemistry A
You can use:
• a scientific or graphical calculator
• an HB pencil




* H 4 3 2 0 1 *




Please write clearly in black ink. Do not write in the barcodes.

Centre number Candidate number


First name(s)

Last name


INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.

INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 32 pages.

ADVICE
• Read each question carefully before you start your answer.




© OCR 2022 [601/5255/2] OCR is an exempt Charity
DC (ST/FC) 300861/4 Turn over

, 2
SECTION A

You should spend a maximum of 20 minutes on this section.

Write your answer to each question in the box provided.

Answer all the questions.

1 An aqueous solution contains a mixture of chloride, bromide and iodide ions.

AgNO3(aq) is added to this mixture, followed by an excess of dilute NH3(aq).

The resulting mixture is then filtered.

Which compound(s) is/are present in the residue on the filter paper?

A AgCl only

B AgCl and AgBr

C AgBr only

D AgBr and AgI


Your answer [1]



2 20 cm3 of nitrogen gas reacts with 10 cm3 of oxygen gas to form 20 cm3 of a gaseous product.

Which equation is the most likely for the reaction?

A N2(g) + O2(g) 2NO(g)

B N2(g) + 2O2(g) N2O4(g)

C 2N2(g) + O2(g) 2N2O(g)

D 2N2(g) + 2O2(g) 4NO(g)


Your answer [1]




© OCR 2022

, 3
3 0.541 g of an element X is reacted with oxygen to form 0.790 g of the oxide X2O3.

What is the element X?

A Al

B Cr

C Ga

D Sc


Your answer [1]



4 Hydrogen peroxide, H2O2, can be oxidised by manganate(VII) ions under acid conditions as
shown below.

2MnO4–(aq) + 5H2O2(aq) + 6H+(aq) 2Mn2+(aq) + 5O2(g) + 8H2O(l)

In a titration, 25.00 cm3 of a disinfectant containing hydrogen peroxide reacts with 22.00 cm3 of
0.125 mol dm–3 KMnO4(aq).

What is the concentration of H2O2, in mol dm–3, in the disinfectant?
Assume that KMnO4 only reacts with H2O2 in the disinfectant.

A 0.0440

B 0.110

C 0.275

D 0.550


Your answer [1]




© OCR 2022 Turn over

, 4
5 The mass of 4 molecules of a substance is 2.125 × 10–22 g.

What is the possible formula of the substance?

A CH4

B O2

C SO2

D I2


Your answer [1]



6 Prussian blue, C18Fe7N18, is a deep blue pigment containing Fe2+, Fe3+ and CN− ions.

What are the numbers of Fe2+ and Fe3+ ions in one formula unit of C18Fe7N18?

A 2 Fe2+ and 5 Fe3+

B 3 Fe2+ and 4 Fe3+

C 4 Fe2+ and 3 Fe3+

D 5 Fe2+ and 2 Fe3+


Your answer [1]




© OCR 2022

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