Which phenomenon accelerates corrosion rate in a galvanized steel pipe connected to copper plumbing?

💡 Explanation

When dissimilar metals (steel and copper) are connected in the presence of an electrolyte (water), a galvanic cell forms due to differing reduction potentials, causing electrolysis concentrating oxidation at the zinc layer and accelerating its corrosion rate. Therefore, accelerated galvanization corrosion results, rather than corrosion, where a single hydroxide layer protects, corrosion would be reduced.

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