OCR A-Level Chemistry AS Breadth in chemistry (01), June 2019
Every question from OCR A-Level Chemistry AS Breadth in chemistry (01), June 2019 (H032): 25 questions, 70 marks, each with its mark scheme and topic.
- Question 1 1 mark
Identify the incorrect statement about the periodic table among the given options concerning groups, periods, atomic numbers, and halogen reactivity.
Module 3: Periodic table and energy · 3.1 The periodic table
- Question 2 1 mark
Identify which of the given molecules contains the largest bond angle.
Module 2: Foundations in chemistry · 2.2 Electrons, bonding and structure
- Question 3 1 mark
Calculate the percentage composition by mass of nitrogen in ammonium carbonate, (NH4)2CO3.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions
- Question 4 1 mark
Identify which chemical process has the highest atom economy for the organic product from four given reaction equations.
Module 2: Foundations in chemistry · Module 4: Core organic chemistry · 2.1 Atoms and reactions · 4.2 Alcohols, haloalkanes and analysis
- Question 5 1 mark
Calculate the total volume of the gas mixture at room temperature and pressure after the reaction between nitric oxide and oxygen is complete.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions
- Question 6 1 mark
Calculate the volume of 0.0100 mol of nitrogen gas at 350 °C and 200 kPa using the ideal gas equation.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions
- Question 7 1 mark
Determine the identity of element X given the mass reacted with chlorine to form a chloride with the formula XCl2.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions
- Question 8 1 mark
Determine the correct chemical formula for copper(I) phosphate(V) given the formula of a phosphate(V) ion.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions
- Question 9 1 mark
Identify which given chemical reaction shows chlorine only being oxidised
Module 2: Foundations in chemistry · Module 3: Periodic table and energy · 2.1 Atoms and reactions · 3.1 The periodic table
- Question 10 1 mark
Identify the correct statement about a reversible reaction from its enthalpy profile diagram showing activation energy and enthalpy change values.
Module 3: Periodic table and energy · 3.2 Physical chemistry
- Question 11 1 mark
Identify the correct statement about the exothermic reaction between hydrogen and chlorine gases from a multiple-choice list.
Module 3: Periodic table and energy · 3.2 Physical chemistry
- Question 12 1 mark
Identify the main reason for the increase in reaction rate with increasing temperature.
Module 3: Periodic table and energy · 3.2 Physical chemistry
- Question 13 1 mark
Identify the effect of adding a catalyst to a system in equilibrium on the rates of the forward and reverse reactions.
Module 3: Periodic table and energy · 3.2 Physical chemistry
- Question 14 1 mark
Identify the correct description of the bonding between carbon atoms in an ethene molecule.
Module 2: Foundations in chemistry · Module 4: Core organic chemistry · 2.2 Electrons, bonding and structure · 4.1 Basic concepts and hydrocarbons
- Question 15 1 mark
Identify which compound is unsaturated, alicyclic and contains an alkyl group from the given options.
Module 4: Core organic chemistry · 4.1 Basic concepts and hydrocarbons
- Question 16 1 mark
Identify the correct statement about an electrophile from the given multiple-choice options.
Module 4: Core organic chemistry · 4.1 Basic concepts and hydrocarbons
- Question 17 1 mark
Identify the monomer that forms the given addition polymer section containing repeating CN groups.
Module 4: Core organic chemistry · 4.1 Basic concepts and hydrocarbons
- Question 18 1 mark
Identify which compound is not likely to have a fragment ion at m/z = 43 in its mass spectrum from four given organic structures.
Module 4: Core organic chemistry · Module 6: Organic chemistry and analysis · 4.2 Alcohols, haloalkanes and analysis · 6.3 Analysis
- Question 19 1 mark
Identify the incorrect statement about infrared radiation among four given statements involving molecular vibrations, greenhouse gases, air pollution monitoring, and CFC photolysis.
Module 4: Core organic chemistry · Module 6: Organic chemistry and analysis · 4.2 Alcohols, haloalkanes and analysis · 6.3 Analysis
- Question 20 1 mark
Identify the organic compound that produces a given infrared spectrum from a choice of four structural formulae.
Module 4: Core organic chemistry · Module 6: Organic chemistry and analysis · 4.2 Alcohols, haloalkanes and analysis · 6.3 Analysis
- Question 21 13 marks
Answer questions on atomic structure, isotopes, electron configurations, dot-and-cross diagrams, equations, and ionic lattices involving calcium, nitrogen, and oxygen.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions · 2.2 Electrons, bonding and structure
- Question 22 7 marks
Calculate the concentration of hydrochloric acid from a titration with sodium carbonate, including calculation of titres, mean titre, stoichiometry, and percentage uncertainty.
Module 1: Development of practical skills in chemistry · Module 2: Foundations in chemistry · Practical Activity Groups · Module 6: Organic chemistry and analysis · 6.3 Analysis · PAG 2: Acid-base titration · 2.1 Atoms and reactions
- Question 23 8 marks
Explain the trend in boiling points of the halogens and describe tests for ammonium and bromide ions in ammonium bromide including reagents, observations, and equations.
Module 2: Foundations in chemistry · Module 3: Periodic table and energy · 2.2 Electrons, bonding and structure · 3.1 The periodic table
- Question 24 10 marks
Apply Le Chatelier's principle to ammonia synthesis, calculate Kc from equilibrium concentrations, state standard conditions, and calculate standard enthalpy change of formation for NO.
Module 3: Periodic table and energy · Module 5: Physical chemistry and transition elements · 3.2 Physical chemistry · 5.1 Rates, equilibrium and pH · 5.2 Energy
- Question 25 12 marks
Determine organic oxidation products, systematic names, combustion equations, radical substitution mechanisms, and molecular formulas for alcohols and alkanes.
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