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The Recognized Strong Acids and Bases, Identified Structurally

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The short strong acid and base list is fixed by structure, not memorized values.

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HCl, HBr, HI, HNO3, H2SO4, and HClO4 form the strong acid set; the group 1 hydroxides (LiOH, NaOH, KOH) and the soluble group 2 hydroxides (Ca(OH)2, Sr(OH)2, Ba(OH)2) form the strong base set.

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Every acid outside this list is weak by default, including the familiar but weak HF.

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