Is aspirin a strong or weak acid?

Aspirin (acetylsalicylic acid) is a weak acid.

- Its carboxylic acid group can donate a proton (H+), but it does not fully dissociate in water—typical of weak acids.
- In water, only a fraction of aspirin molecules ionize into H+ and the acetylsalicylate (A−) form, rather than completely converting to ions.