Copy of 2024 ANDSS 6092 Prelim P3 Prep List

Setter: Mrs S Yap 1 CONFIDENTIAL INSTRUCTIONS – Ensure that all materials in this document must NOT reach the candidates either directly or indirectly. 2024 Chemistry (Revised) Syllabus 6092 Prelim Exam Apparatus & Chemical List Question 1 3 x test-tubes Solution W: 1 x test-tube rack 1 mol/dm3 aqueous ammonium sulfate [dissolve 13.2g (NH4)2SO4 in 100 cm3 deionised water] 1 x test-tube holder 1 x teat pipette / dropping pipette 1 x Bunsen burner 1 x lighter 1 x wash bottle of deionised water bench reagents 1 x delivery tube 1.0 mol/dm3 dilute nitric acid 2 x red / blue litmus papers 1.0 mol/dm3 aqueous sodium hydroxide 1 x wooden splint 0.1 mol/dm3 aqueous barium nitrate 1 x 5 cm3 solution W 0.05 mol/dm3 aqueous silver nitrate (dispensed in boiling tube) limewater (freshly prepared & saturated) 1 x waste container Question 2 1 x 25.0 cm3 pipette Solution P: 1 x pipette filler 0.04 mol/dm3 dilute sulfuric acid [cautiously pour 2.2 cm3 of concentrated sulfuric acid(98%) into 500 cm3 of deionised water with continuous stirring. Make this solution up to 1 dm3 with deionised water.] 1 x 50 cm3 burette 1 x ‘butterfly’ burette clamp 1 x retort stand 1 x filter funnel 2 x conical flasks 1 x white tile Solution Q: 1 x 150 cm3 P in capped container 0.100 mol/dm3 potassium hydroxide [Dissolve 5.611 g of KOH in 1 dm3 of deionised water.] NOTE to check for titration allowance in preparation of solutions P and Q: SS to ensure that 25.0 cm3 of Q reacts between 29.00 cm3 and 33.00 cm3 of P 1 x 150 cm3 Q in capped container 1 x 15 cm3 thymolphthalein indicator in dropper bottle

Setter: Mrs S Yap 2 CONFIDENTIAL INSTRUCTIONS – Ensure that all materials in this document must NOT reach the candidates either directly or indirectly. Question 3 1 x 50 cm3 measuring cylinder Solution R: 1 x 250 cm3 beaker 0.800 mol/dm3 copper(II) sulfate [dissolve 199.7 g CuSO4.5H2O in 1 dm3 of deionised water] 1 x thermometer ( -10oC to + 110oC) 1 x styrofoam cup 1 x glass rod 1 x stop-watch 1 x at least 2.0 g zinc powder – label as T (dispense in small vial) 1 x 50 cm3 R in capped container 4 x electronic balance