AQA A-Level Chemistry Paper 2, 2017
Every question from AQA A-Level Chemistry Paper 2, 2017: 11 questions, 105 marks, each with its mark scheme and topic.
- Question 1 13 marks
Identify reaction products, mechanisms, conditions, and perform a percentage yield calculation for various reactions of 1-bromopropane.
Organic Chemistry · Physical Chemistry · 3.3.3 Halogenoalkanes · 3.3.11 Amines · 3.1.2 Amount of Substance
- Question 2 4 marks
Determine the initial rate of reaction from a concentration-time graph by drawing a tangent at t = 0, and calculate a new initial concentration of reactant A when the rate increases by a factor of 1.7.
Physical Chemistry · 3.1.9 Rate Equations
- Question 3 7 marks
Calculate the rate constant and its units from rate equation data, then determine the activation energy using the Arrhenius equation.
Physical Chemistry · 3.1.9 Rate Equations
- Question 4 8 marks
Name, distinguish, explain racemic mixture formation, and identify an isomer product for the reaction of pentanal and its isomer with KCN followed by dilute acid.
Organic Chemistry · 3.3.1 Introduction to Organic Chemistry · 3.3.7 Optical Isomerism · 3.3.8 Aldehydes and Ketones
- Question 5 9 marks
Draw the structural formula of the diester formed from ethanoic acid and ethane-1,2-diol, complete an equilibrium moles table, write the Kc expression, explain why volume cancels, and calculate the equilibrium moles of ethanoic acid.
Physical Chemistry · Organic Chemistry · 3.1.6 Chemical Equilibria, Le Chatelier's Principle and Kc · 3.3.9 Carboxylic Acids and Derivatives
- Question 6 10 marks
Draw structures of amino acid forms and dipeptides of phenylalanine and serine, then name, outline the mechanism, and name the product for the acylation reaction of propanoyl chloride with ethylamine.
Organic Chemistry · 3.3.1 Introduction to Organic Chemistry · 3.3.9 Carboxylic Acids and Derivatives · 3.3.11 Amines · 3.3.13 Amino Acids, Proteins and DNA
- Question 7 6 marks
Describe how to distinguish between four organic compounds containing carboxylic acid, alcohol, aldehyde, and halogenoalkane groups using the minimum number of test-tube reactions.
Organic Chemistry · Required Practicals · 3.3.6 Organic Analysis · 3.3.5 Alcohols · 3.3.8 Aldehydes and Ketones · 3.3.9 Carboxylic Acids and Derivatives · Required Practical 6: Tests for alcohol, aldehyde, alkene and carboxylic acid
- Question 8 12 marks
Write the generation equation and mechanism for the nitration of nitrobenzene to form 1,3-dinitrobenzene, and analyze TLC separation, Rf values, polarity, and solvent effects for isomeric dinitrobenzenes.
Organic Chemistry · 3.3.10 Aromatic Chemistry · 3.3.16 Chromatography
- Question 9 4 marks
Identify the groups attached to 2-deoxyribose and draw the complementary base thymine forming hydrogen bonds with adenine in a DNA strand.
Organic Chemistry · Physical Chemistry · 3.3.13 Amino Acids, Proteins and DNA · 3.1.3 Bonding
- Question 10 21 marks
Deduce structures, spectra, combustion amounts, and polymer properties for several C6H10O2 isomers, including naming, ideal gas calculations, NMR, and polymer biodegradability.
Physical Chemistry · Organic Chemistry · 3.1.2 Amount of Substance · 3.3.1 Introduction to Organic Chemistry · 3.3.4 Alkenes · 3.3.6 Organic Analysis · 3.3.9 Carboxylic Acids and Derivatives · 3.3.12 Polymers · 3.3.15 Nuclear Magnetic Resonance Spectroscopy
- Question 11 11 marks
Explain the relative base strengths of three aromatic/aliphatic amines and devise a three-step organic synthesis of 2-phenylethanamine from methylbenzene.
Organic Chemistry · 3.3.2 Alkanes · 3.3.3 Halogenoalkanes · 3.3.11 Amines · 3.3.14 Organic Synthesis