Chemistry
Advanced
PAPER 2: Advanced Organic and Physical Chemistry
Marks
Pearson Edexcel Level 3 GCE Chemistry Advanced PAPER 2: Advanced Organic and Physical
Chemistry QP JUNE 2024
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Information
• The
• – usemarks
total mark for this paper is 90.
The for each question are shown in brackets
• your answer
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
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
• Showeach question
all your carefully
working before youand
in calculations start to answer
include unitsit.where appropriate.
• Check your answers if you have time at the end. Turn over
Some questions must be answered with a cross in a box . If you change your mind about an
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answer, put a line through the box and then mark your new answer with a cross .
1 This question is about organic compounds that contain a halogen atom or a nitrogen
atom.
(a) Equal amounts of four bromoalkanes were added to separate test tubes
containing 2 cm3 of a silver nitrate solution.
The mixtures were heated in a water bath.
Which bromoalkane would be the first to form a precipitate?
(1)
A 1‑bromobutane
B 2‑bromobutane
C 1‑bromo‑2‑methylpropane
D 2‑bromo‑2‑methylpropane
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(b) Which pair of reactants will form an N‑substituted amide?
(1)
A CH3COCl and NH3
B CH3CH2OH and NH3
C CH3COCl and CH3NH2
D CH3CH2OH and CH3NH2
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2
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, (c) Ammonia reacts with bromoethane as shown.
2NH3 + CH3CH2Br NH4Br + CH3CH2NH2
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(i) Explain, by referring to the reaction mechanism, the roles of ammonia in the
formation of each of the products of this reaction.
(3)
............................................................................................................................. .. ....................................................................... ........................................................ ......................
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(ii) What conditions are needed for this reaction?
(1)
Method of heating Solvent
A heat in a sealed tube ethanol
B heat under reflux ethanol
C heat in a sealed tube water
D
heat under reflux water
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3
■■■■ Turn over
, (d) The halogenoalkane, 1‑bromobutane, can be formed by the reaction of
butan‑1‑ol with sodium bromide and sulfuric acid.
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CH3CH2CH2CH2OH + NaBr + H2SO4 CH3CH2CH2CH2Br + NaHSO4 + H2O
Calculate the atom economy, by mass, for the formation of 1‑bromobutane. Give your
answer to one decimal place.
[Ar values: H = 1.0 C = 12.0 O = 16.0 Na = 23.0 S = 32.1 Br = 79.9]
(2)
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(Total for Question 1 = 8 marks)
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