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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Hydrochloric vs. sulfuric acid for Science Fair

Hey I would like to know whether hydrochloric acid, or sulfuric acid, would have the most effect on metals covered with oxide? How much of a difference would it have on the chemical properties of these acids, and their pH's?

Doug W
- Charleston, South Carolina, USA

Hi, Doug. At room temperature hydrochloric acid will be a more powerful rust removing acid. It's normally used at a 10-20 percent strength for rust removal. Good luck.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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