Which metals would act as sacrificial anodes (cathodic protection) for iron? Sn Na Cr Mg Cu Despite its ability to act as a sacrificial anode for iron, which metal's reactivity with water makes it unsuitable to attach to the hull of a steel ship? Cr Mg Cu Na Sn O O O O O ОООО
Science behind corrosion-test
Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.
Corrosion
Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.
![**Cathodic Protection and Sacrificial Anodes**
**Question 1:**
*Which metals would act as sacrificial anodes (cathodic protection) for iron?*
- [ ] Sn
- [ ] Na
- [ ] Cr
- [ ] Mg
- [ ] Cu
**Explanation:**
Sacrificial anodes are more reactive metals that are used to protect a less reactive metal from corrosion by corroding themselves. In this case, the goal is to protect iron.
**Question 2:**
*Despite its ability to act as a sacrificial anode for iron, which metal's reactivity with water makes it unsuitable to attach to the hull of a steel ship?*
- ☐ Cr
- ☐ Mg
- ☐ Cu
- ☐ Na
- ☐ Sn
**Explanation:**
Some metals, although capable of acting as sacrificial anodes, react too aggressively with water, rendering them impractical for certain applications like protecting the hull of a steel ship. This question tests your understanding of both reactivity and practical application.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F214a1152-ccda-43e7-9936-4a2ae323f75a%2Fb96d2276-d7a4-4e9c-a207-597563c7cb18%2Fz5diem_processed.png&w=3840&q=75)
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