13620.08R 5 [Turn over Question 2 Each candidate must be supplied with: • approximately 50 cm3 of toluene in a stoppered container labelled A and flammable and moderate hazard (exclamation mark label) • approximately 50 cm3 of ethanol in a stoppered container labelled B and flammable and moderate hazard (exclamation mark label) • approximately 50 cm3 of deionised water in a stoppered container labelled C • 8 × test tubes • 3 × stoppers for test tubes • 2 × test tube racks • 1 × spatula • 1 × piece of universal indicator paper • 2 × 250 cm3 beakers • 1 × stopclock • 1 × 50.0 cm3 burette of at least class B quality (burette from Q1 can be rinsed and reused) • 1 × filter funnel for filling the burette • 1 × plastic rod/plastic 30 cm ruler • 1 × cloth for rubbing plastic rod/plastic ruler • several 3 cm3 graduated disposable pipettes • access to potassium manganate(VII) solution labelled potassium manganate(VII) solution. This solution should be approximately 0.02 mol dm–3. Each candidate will require 10 drops. • access to dilute sulfuric acid. This solution should be approximately 1.0 mol dm–3 and labelled dilute sulfuric acid and moderate hazard (exclamation mark label). Each candidate will require 3 cm3. • access to phosphorus(V) chloride (fume cupboard) labelled phosphorus(V) chloride and corrosive and moderate hazard (exclamation mark label) • access to iodine solution labelled iodine solution. This solution should be approximately 0.01 mol dm–3. Each candidate will require 5 cm3. • access to a kettle of hot water 13620.03 [Turn over ADVANCED SUBSIDIARY (AS) General Certificate of Education 2023 Chemistry Assessment Unit AS 3 Practical Assessment Practical Booklet A [SCH31] TUESDAY 9 MAY, MORNING Confidential Instructions to the Supervisor of the Practical Examination