The pH scale measures the acidity or alkalinity of a substance, ranging from 0 to 14, with values below 7 representing acidity, above 7 representing alkalinity, and 7 representing neutrality.

The pH scale measures a solution’s acidity or alkalinity. The range for the pH scale is 0 (strong acid) to 14 (strong alkali). pH 0 – 2: strong acid, for example hydrochloric acid or sulfuric acid. pH ...