What Is pH and What Does It Measure? - ThoughtCo
https://www.thoughtco.com/overview-of-ph-measurements-608886
WEBMay 6, 2019 · pH describes how acidic or basic an aqueous solution is, where a pH below 7 is acidic and a pH greater than 7 is basic. pH of 7 is considered neutral (e.g., pure water). Typically, values of pH range from 0 to 14, although very strong acids may have a negative pH , while very strong bases may have a pH exceeding 14.
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