Edexcel A-Level Chemistry AS Paper 2, June 2016
Every question from Edexcel A-Level Chemistry AS Paper 2, June 2016 (8CH0): 8 questions, 80 marks, each with its mark scheme and topic.
- Question 1 8 marks
Identify alkane nomenclature, structural isomers, reforming equations, and free-radical substitution mechanisms involving initiation, propagation, and termination steps.
Organic Chemistry · Topic 6: Organic Chemistry I
- Question 2 6 marks
Identify alkene isomer stereochemistry, reaction mechanisms and intermediates for electrophilic addition, and apply Le Chatelier's principle and equilibrium expressions to the hydration of ethene.
Physical Chemistry · Organic Chemistry · Topic 6: Organic Chemistry I · Topic 10: Equilibrium I · Topic 11: Equilibrium II
- Question 3 11 marks
Write an ionic equation for the hydrolysis of 2-bromobutane, devise an experiment to compare rates of halogenoalkane hydrolysis, draw a Maxwell-Boltzmann distribution curve at a higher temperature, and explain the effect of temperature on reaction rate.
Organic Chemistry · Physical Chemistry · Core Practicals · Topic 6: Organic Chemistry I · Topic 9: Kinetics I · Core Practical 4: Investigate the hydrolysis of halogenoalkanes
- Question 4 10 marks
Calculate the number of molecules, write the standard enthalpy of formation equation, calculate the enthalpy of combustion using mean bond enthalpies, complete a reaction profile, and explain the difference between calculated and data book values for ethanol.
Physical Chemistry · Topic 5: Formulae, Equations and Amounts of Substance · Topic 8: Energetics I
- Question 5 14 marks
Describe and calculate aspects of the preparation of 2-chloro-2-methylpropane from 2-methylpropan-2-ol, including separation, purification, distillation, percentage yield, and mechanism.
Organic Chemistry · Core Practicals · Physical Chemistry · Core Practical 6: Investigating chlorination of 2-methylpropan-2-ol · Core Practical 7: Identify unknown organic liquids and inorganic solids · Topic 5: Formulae, Equations and Amounts of Substance · Topic 6: Organic Chemistry I
- Question 6 8 marks
Calculate the enthalpy change of solution for anhydrous sodium carbonate using calorimetry data, complete a Hess's cycle to find the enthalpy change of hydration, and explain the effect of using an old hydrated sample on the enthalpy change.
Physical Chemistry · Topic 8: Energetics I
- Question 7 9 marks
Deduce the molecular formula, draw possible structural isomers, and identify the branched-chain structure of alcohol X using percentage composition, mass spectrometry, and oxidation data.
Organic Chemistry · Physical Chemistry · Topic 5: Formulae, Equations and Amounts of Substance · Topic 6: Organic Chemistry I · Topic 7: Modern Analytical Techniques I
- Question 8 14 marks
Prepare ethanedioic acid from ethane-1,2-diol, describe the preparation of a standard solution, state indicator colour changes, calculate the value of n in ethanedioic acid crystals from titration data, and explain the effect of damp crystals.
Organic Chemistry · Physical Chemistry · Core Practicals · Topic 6: Organic Chemistry I · Topic 5: Formulae, Equations and Amounts of Substance · Core Practical 2: Preparation of a standard solution from a solid acid · Core Practical 3: Find the concentration of a solution of hydrochloric acid