Sorry, no. Carbonic acid (a reducing agent) reacts with rust (ferric
oxide) to form ferrous iron, which is water-soluble. It does not react
with elemental iron. Though, if you leave carbonic acid (in water
solution) in contact with iron for an extended period, with access to
oxygen, the iron will continue to rust, and the rust almost
immediately be reduced by the carbonic acid, giving the appearance the
the iron is being directly attacked.

I think we've stumbled onto the formula for New Coke P

David J. Bockman, Fairfax, VA (USDA Hardiness Zone 7)
Bunabayashi Bonsai On The World Wide Web: http://www.bunabayashi.com
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