Research into gas-phase Brønsted acids has yielded profound insights into proton donation processes devoid of solvation effects, allowing chemists to probe intrinsic acid strengths. This field ...

A food with a pH below 4.6 is high in acid. This includes many citrus fruits, plums, grapes, pomegranates, and several other fruits. Tomatoes, which are technically a fruit, are also acidic. Defining ...