What does the term "pH" measure in a solution? 🔊
The term "pH" measures how acidic or basic a solution is and is a logarithmic scale of hydrogen ion concentration [H+]. A pH below 7 indicates acidity, while a pH above 7 indicates alkalinity; a pH of 7 is considered neutral. pH plays a critical role in various chemical, biological, and environmental processes. For example, it influences enzyme activity and the solubility of nutrients in water.
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