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- Acid strength is measured by the degree of hydrogen ion dissociation. (see acid disassociation constant (Ka)
- Weak acids have their hydrogen ions strongly bonded to them and release only a few in a given solution.
- Strong acids almost totally disassociate, releasing and making nearly all their hydrogen ions available for bonding to other compounds.
- The pH of a solution is dependent on the final equilibrium established between all the acidic and basic compounds present.