What is an advantage of using carbonic acid over strong mineral acids in certain surface preparation tasks?
Answer
The resultant residue (water and $ ext{CO}_2$) is environmentally benign and easy to dissipate.
Carbonic acid offers a gentler acidic environment, and its resultant residue, consisting only of water and $ ext{CO}_2$, is environmentally benign and easily rinsed away or dissipated, unlike strong acids requiring neutralization.

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