In part A of this experiment (corrosion), how is oxidation of iron (Fe) detected?

Question

In part A of this experiment (corrosion), how is oxidation of iron (Fe) detected?

Answer

The presence of bubbles in the test tube indicates a site where oxidation of Fe is occurring.

Answer

A pink colour in the test tube indicates a site where oxidation of Fe is occurring.

Answer

A blue colour in the test tube indicates a site where oxidation of Fe is occurring.

Answer

There is no way to detect oxidation of Fe in this experiment.

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