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 second part of her experiment, she added iron metal to other test tubes C and D aqueous solutions of aluminium sulphate and copper sulphate.On the basis of this experiment state which one is most reactive metal and why? Write chemical equations

Answer 1

In the question we have been given with some solutions contained in test tube.

Test Tube A contains =Iron Sulphate (FeSo4)

Test Tube B contains=Copper Sulphate (CuSo4)

Test Tube C contains= Aluminium Sulphate Al2(so4)3

Test Tube C contains= Copper Sulphate (CuSo4)

Reaction that takes place when student adds aluminium metal to the test tube A and test tube B will be as follows:-

For Test Tube A :-

2Al + 3FeSo4 → Al2(SO4)3 + 3Fe

For test tube B:-

2Al + 3CuSo4 → Al2(SO4)3 + 3Cu

Now, the student adds iron metal in aqueous solutions of two different solutions in test tube C and D then the reaction will be as follows:-

For Test Tube C :-

2Fe + Al2(SO4)3 → No Reaction

For Test Tube D:-

Fe + CuSO4. → FeSO4 + Cu.

Colour changes will be observed in the test tube A, B and D since in test tube A and B aluminium displaces the iron and copper sulphate solutions so the changes will be observed. And iron displaces Cu in test tube D so the changes will be observed in this test tube.

And since aluminium displaces both the elements, it is the most reactive element.

Answer 2

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 second part of her experiment, she added iron metal to other test tubes C and D aqueous solutions of aluminium sulphate and copper sulphate.On the basis of this experiment state which one is most reactive metal and why? Write chemical equations