Chemistry · Chemical Equilibrium

Arrange the stepwise dissociation constants of phosphoric acid (H3PO4) in the increasing order: H3PO4 + H2O ⇒ H3O+ + H2PO4−; Ka1 H2PO4− + H2O ⇒ H3O+ + HPO42−; Ka2 HPO42− + H2O ⇒ H3O+ + PO43−; Ka3

Verified Solution4 OptionsUpdated: October 2026👁️1 View

Correct answer

Ka3 < Ka2 < Ka1

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