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Only part c and d please

Only part c and d please

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Only part c and d please
9. Corrosion of metals is a serious concern in industries. Some metals are made "rust proof" with the addition of a second metal. For example, galvanized nails are used in construction products outdoors as the nails won't easily rust even moist environments. Galvanized nails are made of iron coated in zinc. a. The oxidation of iron involves the reduction of oxygen gas with water. Find the reduction potential for this half reaction. (You'll need this number to help answer the other parts of this question!) b. The oxidation half reaction involves iron losing electrons. Iron ion, however, has two possible oxidation states. Which ion, Fe²+ or Fe³+, do you predict would form more spontaneously with the half reaction from part a. Explain. 2+ Anode fe +26² feis) €²: -0.44 V a) Cathode: 02 191 +2+1 30% 49 +20 3+1₂0 €'s 1.23 V office) = 1.23 - (-0.44) 1.67 V +2 6) Fe² reduction potential is more nigative than O₂, but fe² to get oxidized, reduction potential thon for metal sitive C. Is zinc more reactive, or less reactive than iron? Explain your choice. d. A sacrificial metal is used to protect another metal from oxidation. Explain how zinc can act to protect the iron in galvanized nails from rusting. much negative
Transcribed Image Text:9. Corrosion of metals is a serious concern in industries. Some metals are made "rust proof" with the addition of a second metal. For example, galvanized nails are used in construction products outdoors as the nails won't easily rust even moist environments. Galvanized nails are made of iron coated in zinc. a. The oxidation of iron involves the reduction of oxygen gas with water. Find the reduction potential for this half reaction. (You'll need this number to help answer the other parts of this question!) b. The oxidation half reaction involves iron losing electrons. Iron ion, however, has two possible oxidation states. Which ion, Fe²+ or Fe³+, do you predict would form more spontaneously with the half reaction from part a. Explain. 2+ Anode fe +26² feis) €²: -0.44 V a) Cathode: 02 191 +2+1 30% 49 +20 3+1₂0 €'s 1.23 V office) = 1.23 - (-0.44) 1.67 V +2 6) Fe² reduction potential is more nigative than O₂, but fe² to get oxidized, reduction potential thon for metal sitive C. Is zinc more reactive, or less reactive than iron? Explain your choice. d. A sacrificial metal is used to protect another metal from oxidation. Explain how zinc can act to protect the iron in galvanized nails from rusting. much negative
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