The Hydrogen Sulfate or Bisulfate Ion HSO₄^- Can Act as Either

question 39

Multiple Choice

The hydrogen sulfate or bisulfate ion HSO₄^- can act as either an acid or a base in water solution. In which of the following equations does HSO₄^- act as an acid?

• A) HSO₄^- + H₂O  SO₄^2- + H₃O⁺
• B) HSO₄^- + H₂O  H₂SO₄ + OH^-
• C) HSO₄^- + H₃O⁺  SO₃ + 2H₂O
• D) HSO₄^- + OH^-  H₂SO₄ + O^2-
• E) none of these

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