What is the pH of acetic acid?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The pH of acetic acid varies depending on its concentration. A typical household vinegar solution (5% acetic acid) has a pH around 2.4-3.4. Pure glacial acetic acid has a pH close to 2.4, while more diluted solutions have progressively higher pH values. The exact pH depends on both the concentration of acetic acid and the degree of ionization in the solution. As a weak acid, acetic acid doesn't fully dissociate, which is why its pH is higher than strong acids of similar concentration.
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