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, Problem 2STP
Interpretation Introduction

Interpretation: The compound or ion needs to be identified in which oxidation state of nitrogen is -3.

Concept introduction: The change in oxidation state explains the gain or loss of electrons in the oxidation−reduction reactions.

Expert Solution & Answer
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Answer to Problem 2STP

Correct options are B and D.

Explanation of Solution

B. NI3 , Iodine is less electronegative than nitrogen. Thus oxidation state of iodine is +1 and oxidation state of nitrogen is -3.

D. Hydrogen is less electronegative than nitrogen. In NH3 oxidation state of hydrogen is +1 and oxidation state of nitrogen is -3.

Conclusion

A. N2 , In uncombined state, oxidation state of element is zero. Thus, oxidation state ofN in N2 is zero.

C. NO2 , Nitrogen is less electronegative than oxygen. Thus oxidation state of nitrogen is positive in this case and cannot be -3.

Chapter 18 Solutions

World of Chemistry, 3rd edition

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