Making Soluble Salts

Question 1

Give me an example of a salt and what ions are contained within it

Answer 1

Copper Sulphate
Copper (Cu 2+) ion
Sulfuric acid (SO4 2-) ion

Question 2

What other copper compounds can be reacted with sulfuric acid to make copper sulphate?

Answer 2

Copper oxide - Metal oxide
Copper hydroxide - Metal hydroxide
Copper carbonate - Metal carbonate

Question 3

What colour are copper sulphate crystals?

Answer 3

Blue

Question 4

9 Steps

Explain the method used when making copper sulphate crystals from copper oxide and dilute sulfuric acid?

Include words such as: Beaker, Heatproof mat, Gauze, Tripod, Bunsen Burner, Spatula, Stirring Rod, Filter Paper, Funnel, Conical Flask, Evaporating Basin, Water Bath

Answer 4

1. Set up heatproof mat. Place Bunsen burner, tripod and gauze on top. Set beaker on top of gauze.
2. Pour 20cm^3 of sulfuric acid into beaker (this will be our limiting reactant) using measuring cylinder
3. Add small amount of copper oxide using spatula.
4. Stir solution with glass rod (copper will react and seemingly disappear causing solution to turn blue).
5. Continue adding copper oxide until some powder remains after stirring (copper oxide is in excess)
6. Filter solution into conical flask using filter paper and funnel to remove excess copper oxide.
7. Pour solution into evaporating basin and gently heat using water bath. Heat until crystals begin to form
8. Leave solution and crystals to cool for 24 hours
9. Pat crystals dry