Does sulfur cause rust?

I'm doing a chemistry project on rust and I remember learning about sulfur dioxide in acid rain relating to rust. If there is a connection between the two, can someone please explain it?

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  • 1 decade ago
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    Sulfur does not cause rust.

    However, SO2 in water creates sulfuric acid. Sulfuric acid solution (acid rain) on iron will etch the iron into solution; then the oxygen in the solution (or in the air) will combine with the iron to create iron oxide (aka rust).

  • 5 years ago

    erm. If it's already rusty then let the goddamn thing rust. Otherwise sand it down and clear coat it.

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