When an iron pipe is partly submerged in water, the iron dissolves more readily below the waterline
Question:
When an iron pipe is partly submerged in water, the iron dissolves more readily below the waterline than at the waterline. Explain this observation by relating it to the description of corrosion given in Figure 19-21.
Figure 19-21
Transcribed Image Text:
Iron Fe 2e Fe 2e- Cu Cu Film of water Fe2+ → Fe2+ -O₂ + 2 H₂O 4 OH (a) Copper-plated iron Iron 4 e Film of water ZnZn2+ 2 e -0₂ + 2 H₂O 4 OH™ 2 e ZnZn²+ (b) Galvanized iron
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Related Book For
General Chemistry Principles And Modern Applications
ISBN: 9780132931281
11th Edition
Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette
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