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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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Section
BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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. For each of the following oxidation-reduction reactions of

metals with nonmetals, identify which element is oxidized and

which is reduced.

a. 3Zn ( s ) + N 2 ( g ) Zn 3 N 2 ( s )    b. Co ( s ) + S ( s ) CoS ( s )    c. 4K ( s ) + O 2 ( g ) 2K 2 O ( s )    d. 4Ag ( s ) + O ( g ) 2Ag 2 O ( s )

Interpretation Introduction

(a)

Interpretation:

In the given oxidation-reduction reaction, the species that oxidized and that reduced should be identified.

Concept Introduction:

The oxidation-reduction reaction is also known as a redox reaction. In this reaction, one reactant is oxidized and other is reduced. The balancing of oxidation-reduction reaction can be done by simple method by comparing the number of each atoms on both sides of the reaction arrow without addition of hydrogen ion, water molecule and electrons from outside.

Explanation

In the given reaction, the oxidation state of zinc in left side of the reaction arrow is zero. It get oxidized to + 2 (most common oxidation state of zinc) to form Zn3N2.

Similarly, nitrogen on left side has zero oxidation state. The oxidation state of nitrogen in Zn3N2 can be calculated as follows:

Interpretation Introduction

(b)

Interpretation:

In the given oxidation-reduction reaction, the species that oxidized and that reduced should be identified.

Concept Introduction:

The oxidation-reduction reaction is also known as a redox reaction. In this reaction, one reactant is oxidized and other is reduced. The balancing of oxidation-reduction reaction can be done by simple method by comparing the number of each atoms on both sides of the reaction arrow without addition of hydrogen ion, water molecule and electrons from outside.

Interpretation Introduction

(c)

Interpretation:

In the given oxidation-reduction reaction, the species that oxidized and that reduced should be identified.

Concept Introduction:

The oxidation-reduction reaction is also known as a redox reaction. In this reaction, one reactant is oxidized and other is reduced. The balancing of oxidation-reduction reaction can be done by simple method by comparing the number of each atoms on both sides of the reaction arrow without addition of hydrogen ion, water molecule and electrons from outside.

Interpretation Introduction

(d)

Interpretation:

In the given oxidation-reduction reaction, the species that oxidized and that reduced should be identified.

Concept Introduction:

The oxidation-reduction reaction is also known as a redox reaction. In this reaction, one reactant is oxidized and other is reduced. The balancing of oxidation-reduction reaction can be done by simple method by comparing the number of each atoms on both sides of the reaction arrow without addition of hydrogen ion, water molecule and electrons from outside.

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