Acidity refers to the chemical property of substances that have a pH lower than 7 on the scale of acidity and alkalinity. In acidic solutions, there is an excess of hydrogen ions (H+).
Substances like citric, acetic, or hydrochloric acids are examples of acidic compounds.
Acidity can affect the taste of foods and the effectiveness of certain chemical processes. Moreover, it is crucial in biology, as many biological systems maintain a delicate balance between acidity and alkalinity to function properly.
