Galvanic Corrosion of Zinc (Sacrificial Anode)

Zn → Zn²⁺ + 2e⁻

Genel Bakış

Zinc acts as a sacrificial anode when electrically connected to iron or steel, preferentially oxidizing to protect the less reactive metal. Zinc's standard reduction potential (-0.76 V) is more negative than iron's (-0.44 V), so zinc corrodes first. This is the principle of cathodic protection and galvanization.

Katılımcılar

Rol	Madde	Katsayı	Hal
Reaktan	Zinc Zn	1	(s)

Günlük Örnek

Galvanized steel roofing, fencing, and car bodies are coated with zinc that corrodes preferentially, protecting the steel underneath.

Endüstriyel Önemi

Zinc galvanizing protects over 100 million tonnes of steel annually. Sacrificial zinc anodes protect ship hulls, pipelines, and offshore structures from corrosion.

Özellikler

Tür: Redox
Geri Dönüşümlü: Hayır
Enerji: Ekzotermik

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Frequently Asked Questions

What is the equation for Galvanic Corrosion of Zinc (Sacrificial Anode)?

The balanced equation is: Zn → Zn²⁺ + 2e⁻.

What type of reaction is Galvanic Corrosion of Zinc (Sacrificial Anode)?

Galvanic Corrosion of Zinc (Sacrificial Anode) is a redox reaction.

Is Galvanic Corrosion of Zinc (Sacrificial Anode) exothermic or endothermic?

Galvanic Corrosion of Zinc (Sacrificial Anode) is exothermic (releases energy).