Edexcel A-Level Chemistry Paper 2, June 2023
Every question from Edexcel A-Level Chemistry Paper 2, June 2023 (9CH0): 9 questions, 90 marks, each with its mark scheme and topic.
- Question 1 4 marks
Draw the skeletal formula of 1,3-dimethylcyclohexane, identify the general formula for a cycloalkene, and explain why reacting ethane with chlorine in the presence of UV light is a poor method to prepare 1,2-dichloroethane.
Organic Chemistry · Topic 6: Organic Chemistry I
- Question 2 6 marks
Answer questions related to the properties, reactions, combustion, conversion, infrared spectroscopy, carbon-13 NMR, and oxidation half-equations of various alcohols.
Organic Chemistry · Physical Chemistry · Topic 6: Organic Chemistry I · Topic 7: Modern Analytical Techniques I · Topic 17: Organic Chemistry II · Topic 5: Formulae, Equations and Amounts of Substance · Topic 3: Redox I · Topic 19: Modern Analytical Techniques II
- Question 3 7 marks
Calculate and determine the molar masses of three organic compounds using high-resolution relative atomic masses, room temperature gas volumes, and the ideal gas equation.
Organic Chemistry · Physical Chemistry · Topic 7: Modern Analytical Techniques I · Topic 5: Formulae, Equations and Amounts of Substance
- Question 4 9 marks
Calculate the empirical formula of a hydrocarbon from combustion data, define an electrophile, and explain the relative resistance of benzene compared to ethene to bromination.
Physical Chemistry · Organic Chemistry · Topic 5: Formulae, Equations and Amounts of Substance · Topic 6: Organic Chemistry I · Topic 18: Organic Chemistry III
- Question 5 10 marks
Investigate the kinetics, rate equations, reaction profiles, and economics of catalysis for nitrogen oxide reactions.
Physical Chemistry · Topic 9: Kinetics I · Topic 16: Kinetics II · Topic 8: Energetics I
- Question 6 12 marks
Investigate the kinetics of the iodine-propanone reaction using a titrimetric method and determine rate equations and mechanisms.
Physical Chemistry · Core Practicals · Core Practical 13a: Follow the rate of the iodine-propanone reaction by a titrimetric method · Topic 16: Kinetics II
- Question 7 18 marks
Explain the physical properties of ethanal and ethanoic acid, draw the mechanism for the reaction of propanal with hydrogen cyanide, explain optical activity of the product, describe the purification of 2,4-DNP derivatives, deduce compound X using melting point and IR data, and label proton environments in an NMR structure.
Organic Chemistry · Core Practicals · Core Practical 7: Identify unknown organic liquids and inorganic solids · Topic 17: Organic Chemistry II · Topic 7: Modern Analytical Techniques I · Topic 19: Modern Analytical Techniques II · Topic 6: Organic Chemistry I · Topic 18: Organic Chemistry III
- Question 8 14 marks
Discuss isomerism in organic compounds involving structural isomers, electrophilic addition mechanisms, regioselectivity, and stereoisomerism including E/Z and optical isomers.
Organic Chemistry · Topic 6: Organic Chemistry I · Topic 17: Organic Chemistry II
- Question 9 10 marks
Identify organic structures from reaction pathways involving halogenoalkanes and Grignard reagents, and calculate the percentage of nitrogen in a compound using back-titration data.
Organic Chemistry · Physical Chemistry · Topic 6: Organic Chemistry I · Topic 17: Organic Chemistry II · Topic 5: Formulae, Equations and Amounts of Substance