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

1 Answer
Oct 5, 2016

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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.