PAG 8.1 Electrochemical cells 1 – Identity / amount required Label Hazard information per learner or 0.1 mol dm–3 aqueous 0.1 mol dm–3 copper sulfate(VI) solution, Currently not classified as hazardous at this copper sulfate(VI) CuSO4(aq) concentration solution c. 50 cm3 0.1 mol dm–3 aqueous 0.1 mol dm–3 diammonium iron(II) sulfate Currently not classified as hazardous at this ammonium iron(II) solution, (NH4)2SO4 concentration. sulfate solution FeSO4(aq) WARNING 0.1 mol dm–3 0.1 mol dm–3 aqueous iron(III) chloride, FeCl3(aq) Causes serious eye irritation Mixtures of aqueous ammonium iron(II) sulfate:iron(III) chloride Volumetric ratios: A 1 Fe2+ : 5 Fe3+ – WARNING B 1 Fe2+ : 3 Fe3+ – A–E (for PAG 8.1) Causes serious eye irritation. C 1 Fe2+ : 1 Fe3+ – D 3 Fe2+ : 1 Fe3+ – E 5 Fe2+ : 1 Fe3+ – c. 50 cm3 from a stock bottle (see below) Currently not classified as hazardous at this saturated aqueous KNO3(aq) concentration. saturated potassium c. 200 cm3 in a wide shallow nitrate(V) solution container for the whole class Handle the soaked filter papers with tweezers.
PAG 8.1 – Electrochemical cells 1 Label Identity / amount required per learner or Hazard information 0.1 mol dm–3 copper sulfate(VI) solution 0.1 mol dm–3 aqueous copper sulfate(VI) solution, CuSO4(aq) c. 50 cm3 Currently not classified as hazardous at this concentration 0.1 mol dm–3 ammonium iron(II) sulfate solution 0.1 mol dm–3 aqueous diammonium iron(II) sulfate solution, (NH4)2SO4 FeSO4(aq) Currently not classified as hazardous at this concentration. 0.1 mol dm–3 0.1 mol dm–3 aqueous iron(III) chloride, FeCl3(aq) WARNING Causes serious eye irritation A–E (for PAG 8.1) Mixtures of aqueous ammonium iron(II) sulfate:iron(III) chloride Volumetric ratios: A – 1 Fe2+ : 5 Fe3+ B – 1 Fe2+ : 3 Fe3+ C – 1 Fe2+ : 1 Fe3+ D – 3 Fe2+ : 1 Fe3+ E – 5 Fe2+ : 1 Fe3+ c. 50 cm3 from a stock bottle (see below) WARNING Causes serious eye irritation. saturated potassium nitrate(V) solution saturated aqueous KNO3(aq) c. 200 cm3 in a wide shallow container for the whole class Currently not classified as hazardous at this concentration. Handle the soaked filter papers with tweezers.