Chemistry: Matter and Change
Chemistry: Matter and Change
1st Edition
ISBN: 9780078746376
Author: Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher: Glencoe/McGraw-Hill School Pub Co
Question
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Chapter 19.2, Problem 26SSC
Interpretation Introduction

Interpretation:

The relationship between change in oxidation number and electron transferred is to be explained.

The relationship between change in oxidation number and oxidation-reduction is to be explained.

Concept introduction:

Oxidation number: It is defined as charge the atom would have if electrons are not shared but transfer completely.

Expert Solution & Answer
Check Mark

Answer to Problem 26SSC

When an atom is oxidized, it loses its electrons and its oxidation number is increased.

When an atom is reduced, it accepts some electrons and its oxidation number is reduced.

Number of electrons lost = increase in oxidation number

Number of electrons gained = decrease in oxidation number

Explanation of Solution

Consider the following redox reaction:

Zn+Cu+2Zn+2+Cu

Oxidation number are as:

Zn0+Cu+2+2Zn+2+2+Cu0

Increase in oxidation number of Zn=+2

It means it loses 2 electrons to get oxidized.

Decrease in oxidation number of Cu+2=2

It means it gains 2 electrons to get reduced.

Conclusion

When an atom is oxidized, it loses its electrons and its oxidation number is increased.

When an atom is reduced, it accepts some electrons and its oxidation number is reduced.

Chapter 19 Solutions

Chemistry: Matter and Change

Ch. 19.1 - Prob. 11SSCCh. 19.1 - Prob. 12SSCCh. 19.1 - Prob. 13SSCCh. 19.1 - Prob. 14SSCCh. 19.2 - Prob. 15PPCh. 19.2 - Prob. 16PPCh. 19.2 - Prob. 17PPCh. 19.2 - Prob. 18PPCh. 19.2 - Prob. 19PPCh. 19.2 - Prob. 20PPCh. 19.2 - Prob. 21PPCh. 19.2 - Prob. 22PPCh. 19.2 - Prob. 23PPCh. 19.2 - Prob. 24PPCh. 19.2 - Prob. 25PPCh. 19.2 - Prob. 26SSCCh. 19.2 - Prob. 27SSCCh. 19.2 - Prob. 28SSCCh. 19.2 - Prob. 29SSCCh. 19.2 - Prob. 30SSCCh. 19.2 - Prob. 31SSCCh. 19.2 - Prob. 32SSCCh. 19 - Prob. 33ACh. 19 - Prob. 34ACh. 19 - Prob. 35ACh. 19 - Prob. 36ACh. 19 - Prob. 37ACh. 19 - Prob. 38ACh. 19 - Prob. 39ACh. 19 - Prob. 40ACh. 19 - Prob. 41ACh. 19 - Prob. 42ACh. 19 - Prob. 43ACh. 19 - Prob. 44ACh. 19 - Prob. 45ACh. 19 - Prob. 46ACh. 19 - Prob. 47ACh. 19 - Prob. 48ACh. 19 - Prob. 49ACh. 19 - Prob. 50ACh. 19 - Prob. 51ACh. 19 - Prob. 52ACh. 19 - Prob. 53ACh. 19 - Prob. 54ACh. 19 - Prob. 55ACh. 19 - Prob. 56ACh. 19 - Prob. 57ACh. 19 - Prob. 58ACh. 19 - Prob. 59ACh. 19 - Prob. 60ACh. 19 - Prob. 61ACh. 19 - Prob. 62ACh. 19 - Prob. 63ACh. 19 - Prob. 64ACh. 19 - Prob. 65ACh. 19 - Prob. 66ACh. 19 - Prob. 67ACh. 19 - Prob. 68ACh. 19 - Prob. 69ACh. 19 - Prob. 70ACh. 19 - Prob. 71ACh. 19 - Prob. 72ACh. 19 - Prob. 73ACh. 19 - Prob. 74ACh. 19 - Prob. 75ACh. 19 - Prob. 76ACh. 19 - Prob. 77ACh. 19 - Prob. 78ACh. 19 - Prob. 79ACh. 19 - Prob. 80ACh. 19 - Prob. 81ACh. 19 - Prob. 82ACh. 19 - Prob. 83ACh. 19 - Prob. 84ACh. 19 - Prob. 85ACh. 19 - Prob. 86ACh. 19 - Prob. 87ACh. 19 - Prob. 88ACh. 19 - Prob. 89ACh. 19 - Prob. 90ACh. 19 - Prob. 91ACh. 19 - Prob. 92ACh. 19 - Prob. 93ACh. 19 - Prob. 94ACh. 19 - Prob. 95ACh. 19 - Prob. 96ACh. 19 - Prob. 1STPCh. 19 - Prob. 2STPCh. 19 - Prob. 3STPCh. 19 - Prob. 4STPCh. 19 - Prob. 5STPCh. 19 - Prob. 6STPCh. 19 - Prob. 7STPCh. 19 - Prob. 8STPCh. 19 - Prob. 9STPCh. 19 - Prob. 10STPCh. 19 - Prob. 11STPCh. 19 - Prob. 12STPCh. 19 - Prob. 13STPCh. 19 - Prob. 14STPCh. 19 - Prob. 15STPCh. 19 - Prob. 16STPCh. 19 - Prob. 17STPCh. 19 - Prob. 18STP
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