Question

In which of the following solution metallic ion can be displaced by aluminium : (i)CuSO4(ii)NaCL(CaCl2(IV)MgSO4 ?

Answer 1

The ions present in solutions are

`Cu^(2+) , Na^(+),Ca^(2+),Mg^(2+)`

The metal dipped in solutions is `Al`

As per the electrochmical series the order of reducing strength of metal is

`Ca >Na >Mg >Al>Cu`

So Al can only reduce `Cu^(2+)` ion from its solution.i.e. Cu only will be displaced from `CuSO_4` solution when Al metal is dipped in it.