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Which of the following ions that accelerate the dissolution rate of metals or alloys in a crevice?

Which of the following ions that accelerate the dissolution rate of metals or alloys in a crevice? Correct Answer H+, Cl–

H+ and Cl– ions accelerate the dissolution rate of metals and alloys in the crevice. These are produced by hydrolysis of metal chlorides. It accelerates corrosion because hydrogen ion decreases pH value (more acidic) and chloride ion attacks the metallic surface in the crevice.

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