A Solution with a PH of 5 Contains More Hydrogen

Question

A solution with a pH of 5 contains more hydrogen ions than a solution with a pH of 2.

Accepted Answer

The pH scale is a logarithmic scale based on the concentration of hydrogen ions in a solution. An increase in pH of 1 unit represents a 10-fold decrease in hydrogen ion concentration. Therefore, a solution with a pH of 2 has a higher concentration of hydrogen ions than a solution with a pH of 5.