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Which of the following is the most corrosive organic acid?

(a) Acetic acid

(b) Formic acid

(c) Ethanol

(d) Acetone

This question was posed to me in examination.

My enquiry is from Environments in portion Other Environments of Corrosion Engineering

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Correct option is (b) Formic acid

To elaborate: Formic acid is one of the strongest and most corrosive organic acids. It mainly results in stress-corrosion cracking of various metals at various conditions. The chemical formula of formic acid is HCOOH.

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