World of Chemistry, 3rd edition
World of Chemistry, 3rd edition
3rd Edition
ISBN: 9781133109655
Author: Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher: Brooks / Cole / Cengage Learning
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Chapter 18.2, Problem 4RQ
Interpretation Introduction

Interpretation: Definition of reduction in terms of oxidation state and electrons needs to be explained.

Concept Introduction: In oxidation-reduction reaction, transfer of electron/s takes place. The transfer of electron, results in the formation of ions. In oxidation, loss of electron/s takes place and in reduction, gain of electron/s takes place.

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Answer to Problem 4RQ

In a reaction, if oxidation state decreases and gaining of electrons takes place then the reaction is termed as reduction.

Explanation of Solution

For an element, decrease in oxidation state results in reduction. As the element takes one or more electrons hence, a decrease in oxidation state occurs. Therefore, reduction is caused by gaining electrons. Below equation is the reduction of chlorine:

World of Chemistry, 3rd edition, Chapter 18.2, Problem 4RQ , additional homework tip  1

In this reaction, oxidation state of Cl decreases from 0 to World of Chemistry, 3rd edition, Chapter 18.2, Problem 4RQ , additional homework tip  2

Conclusion

In oxidation-reduction reaction, oxidizing agents are electron acceptor while reducing agents are electron donor.

Chapter 18 Solutions

World of Chemistry, 3rd edition

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