Exam (elaborations)
AS-Level June 2022 Chemistry PAPER 2: Core Organic and Physical Chemistry
- Module
- A/AS LEVEL
- Institution
- PEARSON (PEARSON)
AS-Level June 2022 Chemistry PAPER 2: Core Organic and Physical Chemistry
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y Please check the examination details below before entering your candidate information
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Candidate surname Other names
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20 hem
Centre Number Candidate Number
C
Pearson Edexcel Level 3 GCE
Paper
Time 1 hour 30 minutes
reference 8CH0/02
Chemistry
Advanced Subsidiary
PAPER 2: Core Organic and Physical Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Instructions
• Fill
Use black ink or ball‑point pen.
• centrein the boxes at the top of this page with your name,
number and candidate number.
• Answer all questions.
• Answer the questions in the spaces provided
– there may be more space than you need.
Information
• The total mark for this paper is 80.
• The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• abilitythetoquestion
For marked with an asterisk (*), marks will be awarded for your
structure your answer logically, showing the points that you make are
related or follow on from each other where appropriate.
• A Periodic Table is printed on the back cover of this paper.
Advice
• Read each question carefully before you start to answer it.
• Show all your working in calculations and include units where appropriate.
• Check your answers if you have time at the end.
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*P70809RA0128*
P70809RA
©2022 Pearson Education Ltd.
Q:1/1/1/1/1/
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Answer ALL questions.
22 is
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Some questions must be answered with a cross in a box . If you change your mind about an
C
answer, put a line through the box and then mark your new answer with a cross .
1 This question is about reaction kinetics.
(a) Maxwell‑Boltzmann distributions of the molecular energies of particles in a gas
are shown at two different temperatures.
The activation energy for the reaction, Ea , is labelled.
T1
T2 T1 < T 2
Number of molecules
with energy, E
Ea
Energy, E
(i) The activation energy is the minimum energy required
(1)
A for a reaction to take place when reactant molecules collide
B for reactant molecules to collide
C for all collisions to result in a reaction
D for the particles to collide with the appropriate orientation
2
*P70809RA0228*
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(ii) Explain, with reference to the gaseous particles, the differences in the
22 is
two distributions.
20 hem
(2)
C
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(iii) Which of the following is not an explanation of why increasing the
temperature increases the rate of a reaction?
(1)
A the area under the curve to the right of Ea is larger at a
higher temperature
B a greater percentage of collisions are successful at a
higher temperature
C molecules move faster and collide more often at a
higher temperature
D there are more collisions, all of which are successful, at a
higher temperature
*P70809RA0328*
3
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