Acidicity

Acidity is a characteristic of substances or solutions that is defined by their pH level, a measure on a scale from 0 to 14. A lower pH, typically below 7, indicates higher acidity, while a higher pH, above 7, signifies alkalinity. Acidity is associated with the concentration of hydrogen ions in a solution, where higher concentrations result in a more acidic environment. In practical terms, acidic substances often possess sour or tart tastes and can exhibit corrosive properties. Common acids include citric acid in citrus fruits and hydrochloric acid in the stomach. Understanding acidity is crucial in various fields, including chemistry, environmental science, and agriculture, as it influences chemical reactions, the behavior of substances in solution, and the health of ecosystems.