Question

when iron rod is kept dipped in copper sulphate solution for sometime a brown coating is formed on the iron Rod what change will be observed in the colour of the solution also write chemical reaction for the reaction involved

Answer 1

. colour changes form blue to green
cuso4 + fe 》》》》》 feso4 + cu

Answer 2

Displacement reaction will occur.
The solution changes from blue colour to green colour as Fe>Cu.