OCR A-Level Chemistry Periodic table, elements and physical chemistry (01), June 2017
Every question from OCR A-Level Chemistry Periodic table, elements and physical chemistry (01), June 2017 (H432): 23 questions, 100 marks, each with its mark scheme and topic.
- Question 1 1 mark
Identify which atom is not an isotope of iodine from a given table of neutron numbers and mass numbers
Module 2: Foundations in chemistry · 2.1 Atoms and reactions
- Question 2 1 mark
Identify the type of bonding between the ligands and the metal ion in [Fe(H2O)6]2+
Module 5: Physical chemistry and transition elements · 5.3 Transition elements
- Question 3 1 mark
Determine the oxidation number of manganese in potassium manganate(VI), K2MnO4.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions
- Question 4 1 mark
Identify which calcium compound contains the greatest percentage by mass of calcium among the given options.
Module 2: Foundations in chemistry · Module 3: Periodic table and energy · 3.1 The periodic table · 2.1 Atoms and reactions
- Question 5 1 mark
Calculate the volume of hydrochloric acid required to react completely with a given amount of calcium oxide.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions
- Question 6 1 mark
Calculate the number of electrons removed from a given mass of Ne(g) to form Ne+(g) ions.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions
- Question 7 1 mark
Calculate the mass of silicon produced when 8.50 g of silicon tetrachloride reacts with an excess of zinc at a 90% percentage yield.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions
- Question 8 1 mark
Identify which pair of solutions forms a white precipitate when mixed.
Module 3: Periodic table and energy · Module 5: Physical chemistry and transition elements · Practical Activity Groups · 3.1 The periodic table · 5.3 Transition elements · PAG 4: Qualitative analysis of ions
- Question 9 1 mark
Calculate the bond enthalpy of the H-I bond given the reaction enthalpy and other bond enthalpies.
Module 3: Periodic table and energy · 3.2 Physical chemistry
- Question 10 1 mark
Identify the correct concentration-time graph shape for a reactant A in a zero order reaction.
Module 5: Physical chemistry and transition elements · 5.1 Rates, equilibrium and pH
- Question 11 1 mark
Identify the product formed when aqueous Cr3+ ions react with an excess of aqueous sodium hydroxide.
Module 5: Physical chemistry and transition elements · 5.3 Transition elements
- Question 12 1 mark
Calculate the hydrogen ion concentration resulting from mixing two strong monobasic acids HA and HB.
Module 2: Foundations in chemistry · Module 5: Physical chemistry and transition elements · 5.1 Rates, equilibrium and pH · 2.1 Atoms and reactions
- Question 13 1 mark
Calculate the partial pressure of oxygen in a gas mixture containing nitrogen and oxygen given the total pressure and the mole fraction of nitrogen.
Module 5: Physical chemistry and transition elements · 5.1 Rates, equilibrium and pH
- Question 14 1 mark
Determine which statements are correct for an electrochemical cell constructed from copper and silver redox systems.
Module 5: Physical chemistry and transition elements · 5.2 Energy
- Question 15 1 mark
Identify which of the given electron configurations for chromium, copper, and an iron ion are correct
Module 2: Foundations in chemistry · Module 5: Physical chemistry and transition elements · 2.2 Electrons, bonding and structure · 5.3 Transition elements
- Question 16 7 marks
Draw a dot-and-cross diagram for the [AlH4]- ion, predict shapes and bond angles for NH4+ and NH2- ions, and explain differences in boiling points of hydrides based on intermolecular forces.
Module 2: Foundations in chemistry · Module 3: Periodic table and energy · 3.1 The periodic table · 2.2 Electrons, bonding and structure
- Question 17 12 marks
Answer questions on Group 2 reactivity, disproportionation of chlorate(V), systematic naming, and entropy changes for precipitation and atomisation reactions.
Module 3: Periodic table and energy · Module 5: Physical chemistry and transition elements · 5.2 Energy · 3.1 The periodic table
- Question 18 12 marks
Analyze free energy changes, Gibbs equation graphical interpretation, heterogeneous equilibria, Kp expressions, feasibility temperature calculations, and enthalpy of formation calculations.
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 19 10 marks
Calculate the total volume of oxygen produced, suggest an alternative experimental method, determine the initial rate, order of reaction, and rate constant for the decomposition of hydrogen peroxide using a concentration-time graph.
Module 5: Physical chemistry and transition elements · Practical Activity Groups · 5.1 Rates, equilibrium and pH · PAG 9: Rates of reaction – continuous monitoring method
- Question 20 10 marks
Explain the effects of pressure and temperature on the yield of hydrogen in an equilibrium reaction, write an expression and units for Kc, and calculate the equilibrium amount of SO3 in a sulfur dioxide and oxygen equilibrium mixture.
Module 5: Physical chemistry and transition elements · 5.1 Rates, equilibrium and pH
- Question 21 12 marks
Calculate the concentration of ethanoic acid from its pH and Ka, complete an acid-base equilibrium equation with conjugate pairs, calculate the pH of a buffer solution made from ethanoic acid and sodium ethanoate, and explain the effect of volume change on buffer pH.
Module 5: Physical chemistry and transition elements · 5.1 Rates, equilibrium and pH
- Question 22 9 marks
Draw a labelled diagram of an electrochemical cell using redox systems 1 and 3, state standard conditions, predict standard cell potential, identify the strongest oxidising and reducing agents from Table 22.1, and construct an overall equation for the reaction between systems 2 and 4.
Module 5: Physical chemistry and transition elements · Practical Activity Groups · 5.2 Energy · PAG 8: Electrochemical cells
- Question 23 13 marks
Deduce formulas and reaction types for copper complex ion reactions and determine the structures and formulas of a nickel complex and its optical isomers from analytical data.
Module 5: Physical chemistry and transition elements · Module 2: Foundations in chemistry · 5.3 Transition elements · 2.1 Atoms and reactions