Uses of Copper Sulphate:
- For make action of alkalies:
With alkalies, a pale blue precipitate of copper hydroxide is formed.
CuSO4 + 2NaOH → Cu(OH)2 + Na2SO4 (Pale blue precipitate)
- Action with H2S
With H2S it gives a black precipitate of copper sulphide.
CuSO4 + H2S → CuS + H2SO4 (Black ppt)
- It is used as a germicide and insecticide in agriculture.
- A mixture of copper sulphate and lime, commonly known as Bordeaux mixture, is used as fungicide.
- It is used in electroplating, calicoprinting and in electrical batteries.