Conjugate acid-base pair dissociation constant relationship

This relationship is general for all conjugate acid/base pairs. Many compilations of equilibrium-constant data list only acid dissociation constants, since it is so easy to calculate basic dissociation constants by using Equation 9-14. For example, in Appendix 3, we find no data on the basic dissociation of ammonia (nor for any other bases). Instead, we find the acid dissociation constant for the conjugate acid, ammonium ion. That is,... 

SECTION 16.8 The relationship between the strength of an acid and the strength of its conjugate base is expressed quantitatively by the equation K X Ky = K , where K and Ky are dissociation constants for conjugate acid base pairs. 

Relationship between acid- and base-dissociation constants of a conjugate acid-base pair... 

Plan The major species in the solution will be iSIH4 Cr,and NH3. Of these, the Q ion is a spectator (it is the conjugate base of a strong add). Thus, the NH4" -NH3 conjugate acid-base pair will determine the pH of the buffer solution. The equilibrium relationship between NH4 and NH3 is given by the base-dissociation constant for NH3 ... 

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