the intention of protecting the steel material (mainly Iron and other elements) of an industry, metallic coatings, some of Zinc and others of Tin, have been planned to protect them from corrosion. If a failure occurs in the union of the coatings, an electrochemical reaction occurs. You are asked to calculate the potential of these reactions respectively, establish which is the anode and identify which of the elements is oxidizing. Finally, decide which is the coating that best protects the steel. Data: E ° Sn + 2 (ac) / Sn (s) = -0.14v. E ° Zn + 2 (ac) / Zn (s) = -0.76v. E ° Fe + 2 (ac) / Fe (s) = -0.44 v Alternatives: a. 0.32v; Iron rusts; 0.3v; Tin rusts. Zinc protects Better b. 0.32v; Iron rusts; 0.3v; Tin rusts. Tin protects Better c. 0.32v; Zinc oxidizes; 0.3v; Iron rusts. Tin protects Better d.0.32v; Zinc oxidizes; 0.3v; Iron rusts. Zinc protects Better e. 0.32v; Zinc oxidizes; 0.3v; Iron rusts. Zinc protects Better
With the intention of protecting the steel material (mainly Iron and other elements) of an industry, metallic coatings, some of Zinc and others of Tin, have been planned to protect them from corrosion. If a failure occurs in the union of the coatings, an
Data: E ° Sn + 2 (ac) / Sn (s) = -0.14v. E ° Zn + 2 (ac) / Zn (s) = -0.76v. E ° Fe + 2 (ac) / Fe (s) = -0.44 v
Alternatives:
a. 0.32v; Iron rusts; 0.3v; Tin rusts. Zinc protects Better
b. 0.32v; Iron rusts; 0.3v; Tin rusts. Tin protects Better
c. 0.32v; Zinc oxidizes; 0.3v; Iron rusts. Tin protects Better
d.0.32v; Zinc oxidizes; 0.3v; Iron rusts. Zinc protects Better
e. 0.32v; Zinc oxidizes; 0.3v; Iron rusts. Zinc protects Better
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