A buffer system must involve the dissociation of H+ ions, as demonstrated by the example of HSO4- converting to HSO3-. This transformation illustrates the essential role of weak acids and their conjugate bases in maintaining pH stability. The discussion emphasizes that a buffer typically consists of a weak acid paired with its conjugate base or a weak base with its conjugate acid. Therefore, using O's instead of H+ ions does not conform to the established definition of a buffer system.
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