OCR A-Level Chemistry Synthesis and analytical techniques (02), June 2022
Every question from OCR A-Level Chemistry Synthesis and analytical techniques (02), June 2022 (H432): 21 questions, 100 marks, each with its mark scheme and topic.
- Question 1 1 mark
Identify the correct statement regarding the different rates of hydrolysis of haloalkanes RCl and RBr based on bond enthalpy.
Module 4: Core organic chemistry · 4.2 Alcohols, haloalkanes and analysis
- Question 2 1 mark
Identify the correct statement regarding the absorption and effects of infrared and ultraviolet radiation.
Module 4: Core organic chemistry · 4.1 Basic concepts and hydrocarbons · 4.2 Alcohols, haloalkanes and analysis
- Question 3 1 mark
Determine the number of sigma bonds in a molecule of methylbenzene
Module 6: Organic chemistry and analysis · 6.1 Aromatic compounds, carbonyls and acids
- Question 4 1 mark
Identify the functional groups present in the given skeletal formula of an organic compound.
Module 4: Core organic chemistry · Module 6: Organic chemistry and analysis · 4.1 Basic concepts and hydrocarbons · 4.2 Alcohols, haloalkanes and analysis · 6.2 Nitrogen compounds, polymers and synthesis
- Question 5 1 mark
Determine the number of chiral carbon atoms in the given steroid drug molecule
Module 6: Organic chemistry and analysis · 6.2 Nitrogen compounds, polymers and synthesis
- Question 6 1 mark
Identify which chemical process has the highest atom economy for preparing ethene among four given options.
Module 2: Foundations in chemistry · Module 4: Core organic chemistry · 2.1 Atoms and reactions · 4.1 Basic concepts and hydrocarbons · 4.2 Alcohols, haloalkanes and analysis
- Question 7 1 mark
Determine the molecular formula of an alkane given the mass of water produced from the complete combustion of a known amount of the alkane.
Module 2: Foundations in chemistry · Module 4: Core organic chemistry · 2.1 Atoms and reactions · 4.1 Basic concepts and hydrocarbons
- Question 8 1 mark
Calculate the mass of paracetamol in milligrams given the number of moles and its chemical structure.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions
- Question 9 1 mark
Calculate the volume of hydrogen gas required to react with 0.0500 mol of an unsaturated nitrile containing two double bonds to form a saturated compound.
Module 2: Foundations in chemistry · Module 4: Core organic chemistry · 2.1 Atoms and reactions · 4.1 Basic concepts and hydrocarbons
- Question 10 1 mark
Identify one of the products formed from the hydrolysis of butyl propanoate by aqueous sodium hydroxide.
Module 6: Organic chemistry and analysis · 6.1 Aromatic compounds, carbonyls and acids
- Question 11 1 mark
Identify the organic compound that produced the given infrared spectrum from four multiple-choice options.
Module 6: Organic chemistry and analysis · Module 4: Core organic chemistry · 6.3 Analysis · 4.2 Alcohols, haloalkanes and analysis
- Question 12 1 mark
Identify which compound produces two triplets in its 1H NMR spectrum from a given list of four organic structures.
Module 6: Organic chemistry and analysis · 6.3 Analysis
- Question 13 1 mark
Identify which given equations represent propagation steps in the radical substitution of pentane to form 1-chloropentane.
Module 4: Core organic chemistry · 4.1 Basic concepts and hydrocarbons
- Question 14 1 mark
Identify which of the given species (NH3, OH-, CH3NH2) can act as a nucleophile.
Module 4: Core organic chemistry · Module 6: Organic chemistry and analysis · 4.1 Basic concepts and hydrocarbons · 4.2 Alcohols, haloalkanes and analysis · 6.2 Nitrogen compounds, polymers and synthesis
- Question 15 1 mark
Identify which isomer(s) of C5H12O have four peaks in their 13C NMR spectrum from a given list of three alcohols.
Module 6: Organic chemistry and analysis · 6.3 Analysis
- Question 16 17 marks
Name and outline the mechanism for the reaction of an unsaturated hydrocarbon with bromine, define structural and stereoisomers, draw cis/trans and optical isomers, deduce structures from NMR and IR spectral data, and draw products and mechanisms of ozonolysis.
Module 4: Core organic chemistry · Module 6: Organic chemistry and analysis · 6.2 Nitrogen compounds, polymers and synthesis · 6.3 Analysis · 4.1 Basic concepts and hydrocarbons · 4.2 Alcohols, haloalkanes and analysis
- Question 17 6 marks
Determine the molar mass and molecular formula of an unknown organic compound using ideal gas equation data, and draw a possible chemical structure for it.
Module 2: Foundations in chemistry · Module 6: Organic chemistry and analysis · 6.2 Nitrogen compounds, polymers and synthesis · 2.1 Atoms and reactions
- Question 18 12 marks
Identify carbonyl compounds and their structures using chemical tests, mass spectrometry, and 1H NMR spectroscopy.
Module 6: Organic chemistry and analysis · 6.1 Aromatic compounds, carbonyls and acids · 6.3 Analysis
- Question 19 22 marks
A structured multi-part organic chemistry question covering carboxylic acid reactions, esterification, hydrolysis, addition and condensation polymers, and a multi-step organic synthesis calculation.
Module 4: Core organic chemistry · Module 6: Organic chemistry and analysis · 6.1 Aromatic compounds, carbonyls and acids · 6.2 Nitrogen compounds, polymers and synthesis · 4.1 Basic concepts and hydrocarbons · 4.2 Alcohols, haloalkanes and analysis
- Question 20 22 marks
Answer questions on the chemistry of aromatic compounds including phenol testing, NMR spectroscopy, electrophilic substitution mechanisms, activating effects, oxidation, amine synthesis, reaction pathways, and esterification.
Module 6: Organic chemistry and analysis · 6.1 Aromatic compounds, carbonyls and acids · 6.2 Nitrogen compounds, polymers and synthesis · 6.3 Analysis
- Question 21 6 marks
Describe the formation of carbon–carbon bonds in aliphatic compounds by two different mechanisms, including reaction mechanisms for each.
Module 6: Organic chemistry and analysis · 6.2 Nitrogen compounds, polymers and synthesis