Ph of aspirin?

What is the pH of aspirin?

Aspirin (acetylsalicylic acid) is a weak acid. Its pH depends on how concentrated the solution is and what solvent conditions it’s in (water vs. buffered solution). In general, aspirin solutions are acidic, with pH values typically in the acidic range when dissolved in water.

How does pH change with aspirin concentration?

Because aspirin is a weak acid, increasing the concentration makes the solution more acidic (lower pH). Diluting it raises the pH toward neutral.

What pH does aspirin have in solid form?

Solid aspirin is not assigned a single pH value because pH is a property of a dissolved aqueous solution. The pH you measure comes from the concentration of aspirin and how it dissociates after dissolving.

Quick practical note for lab/home measurements

If you’re measuring “pH of aspirin” experimentally, you’ll need to specify:
- the aspirin mass (mg),
- the final volume (mL),
- the solvent (water or buffer),
- and whether temperature is controlled.

Sources

No provided sources.