AQA A-Level Chemistry Paper 2 - SOLUTION BANK (Q+A)

The reaction was actually with ammonium ethanoate not ammonia so the formula would have been CH3CONH4

Which would produce the correct thing on the right hand side

also for this one "In step 3, other aromatic products are formed as well as paracetamol
8.3. Draw the structure of one of these other aromatic products."

I drew a compound with a peptide link .... not an ester but i had no idea what to do so im probably wrong

Building a solution bank of all the questions/answers.

If you can remember a specific question that has not been contributed, please add it down below. Thank you in advance

Question 1
1. This question is about amines.
1.1. Give an equation for the preparation of 1,6-diaminohexane by the reaction of 1,6-dibromohexane with an excess of ammonia. (2 marks)

1.2. Complete the mechanism for the reaction of ammonia with 6-bromohexylamine to form 1,6-diaminohexane. (2 marks)

Suggest the structure of a cyclic secondary amine that can be formed as a by-product in this reaction. (1 mark)

1.3. 1,6-diaminohexane can also be formed in a two-stage synthesis, starting from 1,4-dibromobutane.
Suggest a reagent and a condition for each stage in the alternative synthesis.

Stage 1

Stage 2:

Question 2
deduce formula of carboxylic acid, high res mass spec.

Question 3
golf balls.

Question 4
4. Substances P and Q react in a solution at a constant temperature.
The initial rate of reaction was studied in three experiments by measuring the change in concentration of P over the first 5 seconds of the reaction.
The data obtained are shown in table 1.

4.1. Complete Table 2 to show the initial rate of reaction of P for each experiment.

4.2. Calculate the order of reaction with respect to P and Q.

Question 5
The rate constant, k = Ae^-E_a/RT
For this reaction at 25ºC, k = 3.46x10^-8 s^-1
The activation energy Ea = 96.2 kJ mol^-1
The gas constant R = 8.31 J K mol^-1

Calculate a value for the Arrhenius constant A for this reaction. Give the units for A.

Question 6
6. Compounds A and B both have the molecular formula C₄H₈Br₂ . A has a singlet, a triplet and a quartet in its H¹ NMR spectrum. B has two singlets in its H¹ NMR spectrum

6.1. Draw the structure of A and B.

Question 7
7.
Isomer X Isomer Y

7.1. Give the IUPAC name of isomer X. (1 mark)

7.2. Explain how and why isomers X and Y can be distinguished by comparing each of their:
Use data from Tables A and C in the data booklet in your answer. (6 marks)


Question 8
8. Paracetamol is a medicine commonly used to relieve mild pain traditionally paracetamol has been made in industry in a 3-step process.

8.1. Name the mechanism of the reaction in step 1

hi!
are these all the questions that came up?

if your asking because you have an upcoming mock ... it won't be this paper

hi!
are these all the questions that came up?

if your asking because you have an upcoming mock ... it won't be this paper

Have u got the paper on u