The term pH is short for “potential of hydrogen ... which is then turned into acetic acid by bacteria. Acetic acid makes vinegar strongly acidic, with a typical pH of 2–3 (4).

Weak acids are compounds which do donate hydrogen but not very readily, such as some organic acids. Acetic acid, found in vinegar, for instance, contains a lot of hydrogen but in a carboxylic acid ...

Hydrogen ions are the key component of acids, and as foodies everywhere know, the tongue senses acid as sour. That’s why lemonade, that is rich in citric and ascorbic acids, vinegar (acetic acid ...

It is the acetic acid content in vinegar that makes it acidic. Vinegar’s pH can easily be tested by using pH strips. pH strips are inexpensive to use and widely available for purchase.