Question

Your mother has an unlabeled bottle of clear liquid in the refrigerator. You pour a small cup of the liquid and taste it, and it has a distinctly sour flavor. The pH of this liquid is MOST likely

Answer 1

If it's sour, then it's acidic, like in orange or lemon. Acids have a pH of <7. Since it's clear liquid and if it's not that sour, then maybe it's close to water, which has a pH of 7, but it should be less than 7.