Question

describe the reactivity series of metals with a suitable experiment, give equations where necessary?​

Answer 1

Explanation:

Easy way to learn the order of a reactivity series of metals is to use the first letter of each one to make up a silly sentence.

For example : People Say Little Children

Make A Zebra !! Constantly Sniffing Giraffes.

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Answer 2

Answer:

Aim:

Observing the action of zinc, iron, copper and aluminium metals for the following salt solutions.

Zinc sulphate (ZnSO4)

Copper sulphate (CuSO4)

Ferrous sulphate (FeSO4)

Aluminium sulphate (Al2(SO4)3)

Arranging the metals Zinc, Copper, Iron, and Aluminium in the decreasing order of reactivity based on the results obtained from the above.

Materials required:

Aluminium foil

Zinc granules

Copper turnings

Iron filings

Copper sulphate solution

Aluminium sulphate solution

Zinc sulphate solution

Four 50ml beakers

Test tube

Test tube stand

Explanation:

A more reactive metal displaces a less reactive metal from salt solution. Such reactions are called displacement reactions. Consider an example, if a small amount of zinc is dipped in copper sulphate solution, zinc is displaced from copper sulphate. The blue colour of copper sulphate fades and colourless zinc sulphate solution is obtained. Therefore, zinc is more reactive than copper.

Aluminium has the ability to displace zinc, iron, copper from their respective salt solutions and therefore is more reactive than them.

Reactions:

2Al(s) + 3ZnSO4(aq) –→ Al2(SO4)3 3Zn(s)

2Al(s) + 3FeSO4(aq) –→ Al2(SO4)3 3Fe(s)

2Al(s) + 3CuSO4(aq) –→ Al2(SO4)3 3Cu(s)

Zinc has the ability to displace iron, copper from their respective salt solutions and therefore is more reactive than them.

Reactions:

Zn(s) + CuSO4(aq) –→ ZnSO4 (aq) + Cu(s)

Zn(s) + FeSO4(aq) –→ ZnSO4 (aq) + Fe(s)

Zn(s) + Al2(SO4)3(aq) –→ no reaction

Zn(s) + ZnSO4(aq) –→ no reaction

Iron has the ability to displace copper from its salt solution and therefore is more reactive when compared to Cu.

Reactions:

Fe(s) + CuSO4(aq) –→ FeSO4 (aq) + Cu(s)

Fe(s) + FeSO4(aq) –→ no reaction

Fe(s) + Al2(SO4)3(aq) –→ no reaction

Fe(s) + ZnSO4(aq) –→ no reaction

No reaction occurs when any of the metals from zinc, iron, aluminium, and copper are placed in aqueous solution of Al2(SO4)3.

Therefore, from the above, we can conclude the reactivity of elements in the following order –

Aluminium is more reactive than zinc.

Zinc is more reactive than Fe.

Fe is more reactive than Cu.

Hence, Aluminium is the most reactive and Copper being the least reactive metal.