How is acid strength related to the value of Ka? What is the difference between strong acids and weak acids (see Table 13.1)? As the strength of an acid increases, what happens to the strength of the conjugate base? How is base strength related to the value of K_b? As the strength of a base increases, what happens to the strength of the conjugate acid?

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TABLE 13.1 Various Ways to Describe Acid Strength Strong Acid K₂ is large Far to the right Property K₂ value Position of the dissociation (ionization) equilibrium Equilibrium concentration of [H+] compared with original concentration of HA Strength of conjugate base compared with that of water [H+] = [HA]。 A much weaker base than H₂O Weak Acid K₂ is small Far to the left [H+] < [HA], A much stronger base than H₂O