Subject: Chemistry
Book: General Chemistry
pH measures the acidity of a solution and is defined as pH = –log[H+]. A low pH indicates acidic conditions, while a high pH indicates basic conditions. Similarly, pOH = –log[OH–] describes hydroxide concentration. Both relate through pH + pOH = 14 (at 25 °C). Controlling pH is crucial in biochemical processes (e.g., enzyme activity) and industrial applications (e.g., acid–base titration).
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