2P08 Preparation of Soluble and Insoluble Salts

Part I
Procedure:
2)
Observations: copper sulfate crystals and water are formed
3)
Colour of filtrate: colourless
Colour of residue: blue
Name of filtrate: water
Name of residue: copper sulfate

1. CuO (s) + H2SO4 --> CuSO4 + H2O
2. Blue
3 (a)
Observations_________
Explanations________
(b)
Observations_________
Explanations________

Part II
Procedure:
4. Colour of filtrate: Blue

Colour of residue: White

Name of residue: Lead(II)Sulfate

Exercise
1. Word equation: Copper sulfate + lead nitrate = Copper nitrate + Lead sulfate
Chemical equation: CuSO4 (aq) + Pb(NO3)2 (aq) = Cu(NO3)2 (aq) + PbSO4 (s)
2.White precipitate forms when the two aqueous solutions react.
3. Alternatives for lead (||) sulfate

Lead 2 nitrate + Sodum sulfate

Lead 2 sulfide + Hydrogen peroxide

Done by : Ambrose Chua, Kendrick Sinatra Hardy, Liu Yu Xuan, Jovian Tan