Question

the reddish brown colours obtained on the iron nail plced in copper sulphate solution is of ...............

Answer 1

as we know that iron displaces copper from its compounds...
same it will do it to the copper sulphate solution.
and we also know that iron is brownish red in color so the solution appears brown..

hope it helps...

Answer 2

this is a displacement reaction in which iron is more reactive than copper therefore the iron displaces Copper and iron deposits reddish Brown colour