Question 8.1: Show how the amphiprotic ion hydrogen sulfate, HSO4^- , can ...
Show how the amphiprotic ion hydrogen sulfate, HSO4 ^{-} , can react as both an acid and a base.
Strategy
For a molecule to act as both an acid and a base, it must be able to both give up a hydrogen ion and accept a hydrogen ion. Therefore, we write two equations, one donating a hydrogen ion and the other accepting one.
Hydrogen sulfate reacts as an acid in the equation shown below:
HSO_{4} ^{-} + H_{2}O \rightleftarrows H_{3}O^{+} + SO_{4} ^{2-}
It can react as a base in the equation shown below:
HSO_{4} ^{-} + H_{2}O^{+} \rightleftarrows H_{2}O + H_{2}SO_{4}
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