Question

State which of the following reactions will take place or which will not, giving a suitable reason for each?
Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)
Fe(s) + ZnSO4(aq) → FeSO4(aq) + Zn(s)

Answer 1

$\huge\underline\mathfrak\green{AnswEr:-}$

1. $Zn(s) + CuSO4 → ZnSO4(aq) + Cu(s)$

• This reaction takes place because Zinc is more reactive than Copper. This is because the more reactive metal can displace less reactive metal from its compound and displacement reaction takes place.

2. $Fe(s) + ZnSO4(aq) → FeSO4(aq) + Zn(s)$

• This reaction can't takes place because Iron is less reactive than zinc. It can't desplace Zinc from its compound. So, here no reaction takes place.

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Answer 2

The reaction Zn(s) + CuSO4(aq) ➡️ ZnSO4(aq) + Cu (s) will take place.

Explanation:

1. In this question, there are two reactions given. We are asked to find out which reaction will occur and which will not occur among this two given reactions.

2. The first reaction will occur or take place that is,

Zn(s) + CuSO4(aq) ➡️ ZnSO4(aq) + Cu(s)

Reason:

• This reaction of Zn and CuSO4 will occur. It is because according to reactivity series, zinc is more reactive than copper.

• And it is important to note that the metal which is more reactive is able to displace the metal which is less reactive.

• Here, Zn is more reactive and hence displaces Cu from CuSO4 and forms ZnSO4 (Zinc sulphate) as product.

3. The second reaction will not occur, that is,

Fe(s) + ZnSO4(aq) ➡️ FeSO4(aq) + Zn(s)

Reason:

• This reaction of Fe and ZnSO4 will not take place. It is because according to reactivity series, iron is less reactive than zinc.

• A metal which is less reactive cannot displace the other metal in which is more reactive in the chemical reaction.

• Here, in this reaction, Fe is less reactive than Zn and will not be able to displace Zn from ZnSO4. So, this reaction is not possible.

LEARN MORE:

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