PP Presentation

CONJUGATE ACID-BASE PAIRS

A pair of compounds that differ in composition by one H+

HBr (aq) + NH3 (aq) Û NH4+ (aq) + Br- (aq)

ACID BASE conjugate ACID conjugate BASE

of NH3 of HBr

- H+

+ H+

ALL ACID-BASE REACTIONS involve

TWO CONJUGATE ACID-BASE PAIRS

Acid(1) + Base(2) Û Conj-Acid(2) + Conj-Base(1)

HCl + NH3 Û NH4+ + Cl-

H2O + NH3 Û NH4+ + OH-

CH3CO2H + H2O Û H3O+ + CH3CO2-

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