Identify the weak diprotic acid. A)HNO₃ B)H₃PO₄ C)H₂SO₃ D)HClO₄ E)H₂SO₄

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A weak diprotic acid is an acid that can donate two protons and does not completely dissociate in water. Option C (HSO3-) is a weak diprotic acid because it can donate two protons and only partially dissociates in water. Options A (HNO3), B (HPO4^-2), D (HClO4), and E (H2SO4) are not weak diprotic acids because they either have only one proton to donate or they completely dissociate in water.

Identify the Weak Diprotic Acid