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M* + e → M A A+ e- Answer Bank e+A A- reduction M M* +e- not balanced M+ M² + + e- oxidation A A +e

M* + e → M A A+ e- Answer Bank e+A A- reduction M M* +e- not balanced M+ M² + + e- oxidation A A +e

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:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Chapter7: Chemical Reactions: An Introduction
Section: Chapter Questions
Problem 10A
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Attempt 2 In some chemical reactions, one species loses electrons by transferring them to another species. Consequently, the products have different charges than the reacting elements or ions. Losing electrons is called oxidation and gaining electrons is called reduction. Because free electrons cannot remain in a system, both reduction and oxidation must occur together. Such reactions are termed redox reactions. Just as atoms must be balanced in a chemical reaction, the charges in a redox reaction must also be balanced. Reduction and oxidation processes may be expressed separately as half reactions. Half reactions cannot occur independently, but they are useful because they show the gain or loss of electrons by each species. For the half reactions given, M and A represent neutral atoms. Identify each half reaction as showing oxidation, reduction, or as incorrectly balanced. M+ + e -M A A+ e- Answer Bank e-+A A- reduction M M* + e- not balanced Mt M²+ + e¯ oxidation A A + e
Transcribed Image Text:Attempt 2 In some chemical reactions, one species loses electrons by transferring them to another species. Consequently, the products have different charges than the reacting elements or ions. Losing electrons is called oxidation and gaining electrons is called reduction. Because free electrons cannot remain in a system, both reduction and oxidation must occur together. Such reactions are termed redox reactions. Just as atoms must be balanced in a chemical reaction, the charges in a redox reaction must also be balanced. Reduction and oxidation processes may be expressed separately as half reactions. Half reactions cannot occur independently, but they are useful because they show the gain or loss of electrons by each species. For the half reactions given, M and A represent neutral atoms. Identify each half reaction as showing oxidation, reduction, or as incorrectly balanced. M+ + e -M A A+ e- Answer Bank e-+A A- reduction M M* + e- not balanced Mt M²+ + e¯ oxidation A A + e
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