Question

Assertion (A): In the following chemical equation, CuO(s) + Zn(s)→ ZnO (s) + Cu(s) Zinc is getting oxidised and copper oxide is getting reduced. Reason(R) : The process in which oxygen is added to a substance is called oxidation whereas the process in which oxygen is removed from a substance is called reduction.

Answer 1

Answer:

both A and B are correct and reason is the correct explanation of the assertion

Answer 2

Answer:

Here both assertion and reason are correct and reason is the correct explanation of assertion.

Explanation:

Understanding the terms: oxidation and reduction:

Oxidation - It is a process in which addition of oxygen or removal of hydrogen from a substance takes place.

Reduction- It is a process in which addition of hydrogen or removal of oxygen from a substance takes place.

Now, the given chemical reaction is:

CuO(s) + Zn(s) → ZnO (s) + Cu(s)

This reaction can be written in two halves:

reaction I : CuO(s) → Cu(s)

In this reaction, removal of oxygen is taking place from Copper and thus here copper oxide(CuO) is being reduced to copper metal(Cu).

reaction II : Zn(s) → ZnO (s)

In this reaction, addition of oxygen to form zinc oxide(ZnO) is taking place  thus here zinc(Zn) is being oxidised to zinc oxide(ZnO).

Thus for overall reaction: CuO(s) + Zn(s) → ZnO (s) + Cu(s)

Zinc is getting oxidised to zinc oxide(ZnO) while copper oxide is getting reduced to copper metal(Cu).

Hence, both assertion and reason are correct and reason is the correct explanation of assertion.

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