Chapter 18, Problem 35A

Interpretation Introduction

Interpretation: The process of corrosion of metal needs to be explained.

Concept Introduction: Corrosion is one of the most common phenomena that can be experienced in daily lives. Some iron-made structures at some point are coated with a colored orange or reddish-brown coating. The formation of this layer is a chemical process called rusting which is a form of corrosion.

Answer to Problem 35A

Corrosion of metal is represented by oxidation process. Corrosion is undesirable because due to oxidation the metal which corroded permanently loses is strength and attractiveness.

Explanation of Solution

Corrosion is the process through which a metal lose its strength and also its attractiveness. Corrosion can be prevented by coating that means to protect the metal from oxygen and moisture by forming a layer of paint between them.

Conclusion

Corrosion is a spontaneous process in which the metals become a highly stable chemical substance such as oxides, sulfides, hydroxides, etc.