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- A dissociation constant (K) indicates the extent to which a compound will dissociate or disolve, in solution, into its component parts.
- The value of a particular compound's dissociation constant will vary with temperature and pressure.
- The dissociation constant is calculated by multiplying the concentration of the dissociated species and dividing the result by the undisociated compound concentration, once equilibrium is reached at a given temperature and pressure.
- Examples of dissociation constants are the acid disassociation constant (Ka), and the water disassociation constant (Kw).