A-level chem A
OCR
Oxford Cambridge and RSA
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:
the Data Sheet for Chemistry A
You can use:
a scientific or graphical calculator
an HB pencil
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.
,
, 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]
, 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.
2MnO –(aq) + 5H O (aq) + 6H+(aq) 2Mn2+(aq) + 5O (g) + 8H O(l)
4 2 2 2 2
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
Oxford Cambridge and RSA
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:
the Data Sheet for Chemistry A
You can use:
a scientific or graphical calculator
an HB pencil
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.
,
, 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]
, 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.
2MnO –(aq) + 5H O (aq) + 6H+(aq) 2Mn2+(aq) + 5O (g) + 8H O(l)
4 2 2 2 2
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]
