A Piece of Iron Half-Immersed in a Sodium Chloride Solution

A piece of iron half-immersed in a sodium chloride solution will corrode more rapidly than a piece of iron half-immersed in pure water,because

A) the ions,which are not present in pure water,balance the accumulation of charge in each of the half-cells.
B) the chloride ions increase the pH of the solution.
C) the sodium ions oxidize the iron atoms.
D) the chloride ions form a precipitate with iron.
E) the chloride ions oxidize the iron atoms.

Correct Answer:

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