14.7: Vanadium Rainbow Prep
- Page ID
- 209457
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Materials
- 30 – 50 mL Erlenmeyer flasks
- Cotton balls – Can be placed in the hood
- 10 hot plates
- 10 stir bars
- plastic pipets – Can be placed in the hood
Chemicals
Prepare 5 sets
- 2L – 0.1 M ammonium vanadate in 1 M H2SO4
- small jar of zinc dust
- small jar of silver dust
- small jar of tin dust
- 500 mL – 1 M nitric acid
- 500 mL – 0.1 M potassium nitrite
- 500 mL – 0.1 M sodium bromide
- 500 mL – 0.2 M sodium chlorate
Directions
To make the ammonium vanadate solution, Add 200 mL of DI water to 2 L volumetric flask, then add 110 mL of concentrated H2SO4. Caution: This will get extremely warm. Add 23.40 g of solid and mix while warm. Add remaining water. It may take a while to completely dissolve the ammonium vanadate, but it will eventually all go into solution.
Waste bottle needed.
SDS Info
- Ammonium Vanadate – Skull and crossbones – toxic if swallowed; Exclamation point – eye irritant; Health hazard – harmful if inhaled; Exclamation point – may cause respiratory irritation; Health hazard – Causes damage to organs with prolonged exposure or if swallowed; Environmental – aquatic toxicity
- Sulfuric Acid – Corrosion – Skin corrosion/burns; Corrosion – eye damage; Corrosion – Corrosive to metals
- Zinc powder – Environmental – aquatic toxicity
- Silver powder – Environmental – aquatic toxicity
- Tin – Exclamation point – eye irritant; Exclamation point – respiratory tract irritant
- Nitric Acid – Corrosion – skin corrosion/burns; Corrosion – eye damage; Corrosion – corrosive to metals; Flame over Circle – oxidizer; Skull and crossbones – toxic if inhaled
- Potassium Nitrite –Flame over circle – oxidizer; Environmental – aquatic toxicity; Skull and crossbones – toxic if swallowed
- Sodium Bromide – None
- Sodium Chlorate –Exclamation point – harmful if swallowed; Flame over circle – oxidizer; Environmental – aquatic toxicity