Question

a student added few pieces of aluminium metal to two test tubes A and B containing aqueous solutions of iron sulphate and copper sulphate .in the seco.d part of her experiment ,she added iron metal to another test tube C and D containing aqueous solutions of aluminium sulphate and copper sulphate. In which test tube or test tubes will she observe color change? On the basis of this experiment, state which one is the most reactive metal and why?

Answer 1

Aluminum is a more reactive because it reactive series upper.C test tube colour change

Answer 2

Answer:

He will observe color changes in test tubes A and B as aluminum displaces iron and copper   from their respective salt solution.

A color change will also be observed in test tube D as iron displaces copper but does not displace aluminum.

No colour will take place in C as Fe cannot displace Al from Al2(SO4)3 .

From the above observations we can conclude that aluminum is the most reactive metal.

Hope this helps