17. Acid and Base Equilibrium

Polyprotic Acid

General Chemistry17. Acid and Base EquilibriumPolyprotic Acid

Multiple Choice

Which of the following statements about the ionization of a polyprotic acid, such as H₃PO₄, is false?

K_a₁ is much larger than K_a₂ and K_{a_3<.sub>.}

K_a₁ = K_w

We can assume [H₂PO₄⁻] = [H₃O⁺].

[HPO₄²⁻] ≈ K_a₂

The protons are removed from the polyprotic acid in a stepwise fashion.

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Which of the following statements about the ionization of a polyprotic acid, such as H3PO4, is false?

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Which of the following statements about the ionization of a polyprotic acid, such as H₃PO₄, is false?