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Edexcel as level chemistry question paper 2 june 2,023 + mark scheme

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Mark Scheme (Results) Summer 2023 Pearson Edexcel GCE In Chemistry (8CH0) Paper 02: Core Organic and Physical ChemistryEdexcel and BTEC Qualifications Edexcel and BTEC qualifications come from Pearson, the world’s leading learning company. We provide a wide range of qualifications includin...

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  • December 8, 2023
  • 67
  • 2023/2024
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Edexcel as level chemistry question paper 2 june 2023 + mark scheme Centre Number Candidate Number
*P71927A0128*
Turn over Total MarksCandidate surname Other namesPlease check the examination details below before entering your candidate information
Paper
reference
Tuesday 23 May 2023
P71927A
©2023 Pearson Education Ltd.
N:1/1/1/Instructions
• Use black ink or ball‑point pen.• If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).• Fill in the boxes at the top of this page with your name, centre 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 .• For the question marked with an asterisk (*), marks will be awarded for your ability to 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.Y ou must have:
Scientific calculator, Data Booklet, rulerChemistry
Advanced Subsidiary
PAPER 2 : Core Organic and Physical Chemistry8CH0/02Morning (Time: 1 hour 30 minutes)Pearson Edexcel Level 3 GCE *P71927A0228*
2   Answer ALL questions.
Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross .
1 This question is about c
ollision theory. The M
axwell ‑B
oltzmann distribution of molecular energies for a reaction at a particular temperature is shown in the graph. Add another line on the g
raph to represent the same reaction with the same number of particles at a higher temperature.
Number of particles with energy, E
Energy, E
(Total for Question 1 = 2 marks) *P71927A0328* Turn over 3   2 This question is about alkanes and some of their reactions. (a) Hexane is a sa
turated hydrocarbon. Sta
te what is meant by the term ‘saturated hydrocarbon’ . Your answer should refer to both words in the term.
(2)
....................................................................................................................................................................................................................................................................................
............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ (b) When methane reacts with gaseous chlorine, the initiation step is bond breaking in the chlor
ine molecule to form chlorine free radicals. The equa
tion for this step is shown.
Cl2(g) → 2C l•(g) Tw
o equations for the propagation step are shown.
Cl•(g) + CH 4(g) → CH 3•(g) + HC l(g)
CH 3•(g) + C l2(g) → CH 3Cl(g) + C l•(g) (i) Wr
ite the overall equation for this reaction of methane with chlorine. State symbols are not required.
(1) (ii) Calcula
te the maximum mass, in grams, of chloromethane produced when 7.00 g of chlorine gas r
eacts completely with excess methane. [Molar mass of CH 3Cl = 50.5 g mol–1]
(2)

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