Question

A student added few pieces of aluminium metal to to test tube a and b containing aqua solution of iron sulphate and copper sulphate in the second part of experiment she added iron metal to another test tubes a and b containing aqua solution of aluminium sulphate and copper sulphate first in which test tube will she observed colour change on the basis of this experiment state which one is most most reactive metal and why

Answer 1

Aluminum is the most reactive of all as it's on the top of the reactivity series from other elements.

1) A = Pale green color of FeSO4 solution will fade away.(As Al displace it)

B = Blue color of CuSO4 will fade away.(As Al displace it)

2) A = No reaction as Iron can't displace Al.

B = Blue color of CuSO4 will fade away Pale green color will appear.(As Fe displace it)