This document contains 2022
AQA A LEVEL CHEMISTRY Paper 2 2022 BUNDLE
Organic and Physical Chemistry
Question Paper + Mark Scheme 2022
Answer all questions in the spaces provided. box
0 1 An acidified solution of butanone reacts with iodine as shown.
CH3CH2COCH3 + I2 → CH3CH2COCH2I + HI
0 1 . 1 Draw the displayed formula for CH3CH2COCH2I
Give the name of CH3CH2COCH2I
[2 marks]
Displayed formula
Name
3
*03*
Turn over ►
IB/M/Jun22/7405/2
Do not write
outside the
box 0 1 . 2 The rate equation for the reaction is
rate = k[CH3CH2COCH3][H+]
Table 1 shows the initial concentrations used in an experiment.
Table 1
CH3CH2COCH3 I2 H+
Initial concentration / mol dm−3 4.35 0.00500 0.825
The initial rate of reaction in this experiment is 1.45×10−4 mol dm−3 s−1
Calculate the value of the rate constant, k, for the reaction and give its units.
[3 marks]
k
Units
0 1 . 3 Calculate the initial rate of reaction when all of the initial concentrations are halved.
[1 mark]
Initial rate of reaction mol dm−3 s−1
Question 1 continues on the next page
4
*04*
IB/M/Jun22/7405/2
Do not write
outside the
box 0 1 . 4 An experiment was done to measure the time, t, taken for a solution of iodine to react
completely when added to an excess of an acidified solution of butanone.
Suggest an observation used to judge when all the iodine had reacted.
[1 mark]
The experiment was repeated at different temperatures.
Figure 1 shows how 1
t varied with temperature for these experiments.
Version | LATEST 2022 |
Category | AQA Questions and Marking Scheme |
Release date | 2022-09-20 |
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Authors | Qwivy.com |
Pages | 65 |
Language | English |
Tags | AQA A LEVEL CHEMISTRY Paper 2 AQA A LEVEL CHEMISTRY CHEMISTRY 2022 A LEVEL CHEMISTRY CHEMISTRY AQA CHEMISTRY CHEMISTRY A LEVEL |
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