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- ?Lv 65 years agoFavorite Answer
There are strong acids like Hydrochloric aci (HCl) with a pKa of around -7, but scientists have also made superacids like flouroantimonic (SbF5) acid with a pKa of about -25. Technically, hydrofluoric (HF)acid has a higher pKa than hydrochloric acid so it should be a weaker acid, but technically HF is able to eat through glass something that HCl can't do.
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