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← ScienceWhich consequence accelerates corrosion when dissimilar metals join via seawater electrolyte containing sodium chloride?
A)Galvanic corrosion at the anode✓
B)Crevice corrosion within tight locations
C)Pitting corrosion at the cathode
D)Uniform corrosion across both metals
💡 Explanation
When dissimilar metals are immersed in electrolyte (seawater with NaCl), a galvanic couple forms because difference in reduction potentials causes electron flow oxidizing one metal. Therefore, galvanic corrosion erodes the anode, rather than crevice or pitting corrosion needing structural features or uniform corrosion requiring material homogeneity.
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