A-Level AQA Chemistry Paper 2

AQA Paper 2: Physical A-Level Chemistry
Chemistry, Organic Chemistry, and
Practical Skills
Time allowed: 2 hours
Maximum marks: 105
CANDIDATE NUMBER

CENTER NUMBER

DATE



SECTION
A
B
C
D
ORGANIC CHEMISTRY
PRACTICAL
TOTAL



Instructions

• Answer all questions.

• Show all working for calculations.

• Marks are indicated for each question.

• Use the spaces provide

,Section A: Physical Chemistry

Question 1

Define the term enthalpy change of reaction.




(2 marks)




Question 2

Calculate the pH of a 0.010 mol dm solution of HCl.




(3 marks)




Question 3



Explain the effect of increasing temperature on the rate of reaction.

,(3 marks)




Question 4

State the expression for the equilibrium constant for the reaction:

[\text{N}_2 + 3\text{H}_2 \rightleftharpoons 2\text{NH}_3]




(2 marks)




Question 5

Explain why catalysts increase the rate of reaction.




(2 marks)

, Section B: Organic Chemistry

Question 6



Draw the displayed formula of but-2-ene.




(1 mark)



Question 7

State the type of polymerisation that forms poly(ethene).




(1 mark)



Question 8

Explain why alkanes are generally unreactive.