What will happen if an aluminium spoon is used to stir an Fe(NO3)2 solution? Why?

Answer 1

Al is higher in the activity series of metals than is Fe; therefore, Al metal will go into solution and Fe will plate out on the spoon.
2Al(s) + 3Fe(NO3)2(aq) ==> 2Al(NO3)3(aq) + 3Fe(s)