Question

Vishal put an iron nail into a solution of copper sulphate and wrote his observation.

3

S. No. Activity Observation

a) Colour of copper

sulphate solution

b) Colour of Copper

sulphate when iron

is put into it.

Give reason for your observation in b.

Answer 1

The initial colour of copper sulphate is a rather blue colour but as you add iron metal there will be a deplacement reaction between the copper sulphate and the iron nail.
CuSO4+Fe=FeSO4+Cu
The colour changes to greenish brown or light green which is the colour of FeSO4.
there will also be particles of Cu metal which will be in the colour of Cu metal.

Answer 2

Answer:

Metal-Sodium and potasium

Non metal-Phosphorus ,sulphur

Explanation: