H₃PO₃ Is a Diprotic Weak Acid

question 90

Multiple Choice

H₃PO₃ is a diprotic weak acid.What is the balanced equilibrium defined as K_b2 of H₃PO₃?

• A) H₃PO₃(aq)+ H₂O(l) H₃O⁺(aq)+ H₂PO₃^-(aq)
• B) H₂PO₃^-(aq)+ H₂O(l) H₃O⁺(aq)+ HPO₃^2-(aq)
• C) HPO₃^2-(aq) + H₂O(l) OH^-(l)+ H₂PO₃^-(aq)
• D) H₂PO₃^-(aq)+ H₂O(l) OH^-(l)+ H₃PO₃(aq)
• E) HPO₃^2-(aq)+ H₂O(l) OH^-(aq)+ H₃PO₃(aq)

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