Answer to Question #75674 in General Chemistry for carolyn

Question

find equation for 3 step ionization of any tribe-protic acid. identify bases and acid conjugates.

Answer 1

H3PO4(l) ↔H2O(l) H+(aq) + H2PO4-(aq)

H2PO4-(aq) ↔ H+(aq) + HPO42-(aq)

HPO42-(aq) ↔ H+(aq) + PO43-(aq)

The conjugate base is the species formed after an acid donates a proton. The conjugate acid is the species formed after a base accepts a proton.

H3PO4(l) + H2O(l) → H3O+(aq) + H2PO4-(aq)

H3PO4(l) – acid (proton donor)

H2O(l) – base (proton acceptor)

H3O+(aq) – acid

H2PO4-(aq) - base