What is the strongest acid?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The strongest acid currently known is fluoroantimonic acid (HSbF6), a superacid that is 10^16 times stronger than pure sulfuric acid. In practical laboratory use, the strongest commonly encountered acids are perchloric acid (HClO4) and sulfuric acid (H2SO4). Among household or industrial acids, sulfuric acid is considered the strongest, followed by hydrochloric and nitric acids. These strong acids completely ionize in water and are extremely corrosive and dangerous to handle without proper safety precautions.
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