OCR A-Level Chemistry AS Depth in chemistry (02), June 2023
Every question from OCR A-Level Chemistry AS Depth in chemistry (02), June 2023 (H032): 5 questions, 70 marks, each with its mark scheme and topic.
- Question 1 11 marks
Calculate the relative atomic mass of titanium, determine electron configuration and ion subatomic particles, calculate mass of sodium needed for titanium extraction, and describe separation of titanium from sodium chloride.
Module 2: Foundations in chemistry · 2.1 Atoms and reactions · 2.2 Electrons, bonding and structure
- Question 2 19 marks
Assess reactions of Group 2 elements with water, calculate percentage composition from a precipitation reaction, and explain lattice structures and bonding properties for Period 3 elements and compounds.
Module 2: Foundations in chemistry · Module 3: Periodic table and energy · 2.1 Atoms and reactions · 2.2 Electrons, bonding and structure · 3.1 The periodic table
- Question 3 15 marks
Explain the relative reactivity of halogens, calculate volume of seawater needed to extract iodine, define disproportionation with oxidation numbers, outline the nucleophilic substitution mechanism for the alkaline hydrolysis of 2-bromopropane, and compare rates of hydrolysis of haloalkanes.
Module 2: Foundations in chemistry · Module 3: Periodic table and energy · Module 4: Core organic chemistry · 2.1 Atoms and reactions · 3.1 The periodic table · 4.2 Alcohols, haloalkanes and analysis
- Question 4 16 marks
Calculate the enthalpy of combustion of butan-1-ol, determine experimental uncertainties, evaluate combustion data, and calculate average bond enthalpy using bond data.
Module 3: Periodic table and energy · Module 4: Core organic chemistry · Practical Activity Groups · 3.2 Physical chemistry · 4.1 Basic concepts and hydrocarbons · PAG 3: Enthalpy determination
- Question 5 9 marks
Name alcohol A, construct an equation for its dehydration to form an alkene, explain its E/Z isomerism using CIP rules, draw a polymer section from monomer E and explain its water solubility, and outline useful processing methods for waste polymers.
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