pH is a measure of how acidic/basic water is. The range goes from 0 – 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.

What does pH measure quizlet?

The pH scale measures the concentration of hydrogen ions in a solution. In fact, pH means “power of hydrogen ions”. The acid hydrogen fluoride can be dissolved in pure water.

What ion determines pH quizlet?

pH is based upon the number of free hydrogen ions (H+).