|Definition:|| ratio of the number of dissociation events to the maximum number of theoretically possible dissociation events
Note 1 to entry: Dissociation may occur stepwise, as in the following example:
H3PO4 → H++ H2(PO4)−
H3PO4 → 2H++ H(PO4)−2
H3PO4 → 3H++ (PO4)−3
Dissociation degrees are 1/3, 2/3, and 1 for the three reactions above, respectively.