Question

Put tow three iron nails in the blue solution of cropper sulphate and after 15 to 20 minutes the colour of the solution turns green​

Answer 1

Answer:

CuSo4     +    Fe            =                   FeSo4       +      Cu

Copper          Iron                               Iron                   Copper

Sulphate        Nail                               Sulphate            Particles

Since Iron is more reactive than Copper , it mixes to form Iron Sulphate ( Green) . The copper particles settle down at bottom.