The pH of vinegar can vary depending on the specific type and concentration. Generally, vinegar has a pH level ranging from 2 to 3. This acidity is primarily due to the presence of acetic acid. Vinegar is considered an acidic substance, with a pH lower than 7. The pH scale ranges from 0 to 14, where values below 7 indicate acidity, 7 is neutral, and values above 7 indicate alkalinity.