Question

The possible chemical reaction among the following
A. Feso4 +pb -> Pbso4+Fe
B. Znso4+Fe-
Feso4+Zn
c. 2Ag No3+cu -> cu (No3)2+2Ag
D. Pbcl2+cu
cucl2+pb.​

Answer 1

Answer:

(C) 2Ag No3+cu -> cu (No3)2+2Ag

Explanation:

This is because we know that Ag is less reactive than copper so copper displaces silver from the reaction and forms copper nitrate.

It is a displacement reaction

Answer 2

Answer:

The correct answer is option (C) 2AgNO3 + Cu → Cu(NO3)2 + 2Ag

Explanation:

Raectivity of following compounds decrease in following manner,

Zn > Fe > Pb > Cu > Ag.

In case of,

1. FeSO4 + Pb → PbSO4 + Fe

• From the above reactivity manner, we can say that Fe is more reactive than Pb.
• So, in this reaction displacement of Cu in place of Fe is not possible because Fe is more reactive.
• So, this reaction is incorrect.

2. ZnSO4 + Fe → FeSO4 + Zn

• From the above reactivity manner, it is established that Zn is more reactive than Fe.
• So, displacement of Fe in place of Zn is not possible.
• That's why this reaction is incorrect.

3. 2AgNO3 + Cu → Cu(NO3)2 + 2Ag

• From the above reactivity manner, we can see that Ag is less reactive than Cu.
• So, displacement of Cu in place of Ag is occur and form Cu(NO3)2.
• So, this reaction is correct.

4. PbCl2 + Cu → CuCl2 + Pb

• From above reactivity manner, we can say Pb is more reactive than Cu.
• So, displacement of Cu in place of Pb is not possible.
• So, this reaction is incorrect.

Hence, it is proved that option (C) is the correct answer.

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