49. To protect large iron structures against corrosion, they are often galvanised. Why does a thin c — Electrochemistry Chemistry Question

💡 Solution & Explanation

Zinc has a standard reduction potential of -0.76 V, which is lower (more negative) than Iron's -0.44 V. Because it is more easily oxidized, Zinc acts as a sacrificial anode, forcing Iron to become the cathode and strictly preventing it from losing electrons.