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Perchloric Acid
Perchloric acid, HClO4, is an oxoacid of chlorine and is a colorless
liquid soluble in water. It is a strong acid comparable in strength to
sulfuric acid or nitric acid. It is a superacid, but it is not the
strongest Brønsted-Lowry acid (which is fluoroantimonic acid, HSbF6).
Its pKa is −7.
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