pHértéket

The term pHértéket, a Hungarian word, translates to "pH value" in English. It represents a scale used to specify the acidity or alkalinity of an aqueous solution. The pH scale ranges from 0 to 14, with 7 being neutral. Solutions with a pH less than 7 are acidic, and the lower the pH, the stronger the acid. Solutions with a pH greater than 7 are alkaline (or basic), and the higher the pH, the stronger the alkali. The pH value is determined by the concentration of hydrogen ions (H+) in the solution. Specifically, pH is defined as the negative logarithm (base 10) of the hydrogen ion concentration: pH = -log10[H+]. A change of one pH unit represents a tenfold change in hydrogen ion concentration. Understanding pH is crucial in various fields, including chemistry, biology, environmental science, and medicine, as it affects chemical reactions, biological processes, and the properties of substances. For instance, the pH of human blood must be maintained within a very narrow range for optimal health. In environmental contexts, the pH of water bodies can indicate pollution levels and their impact on aquatic life.