A Solution with a PH of 2 Has 1000 Times

Question

A solution with a pH of 2 has 1000 times more hydrogen ions than a solution with a pH of 5.

Accepted Answer

The pH scale is logarithmic, meaning that each whole number difference represents a tenfold difference in the concentration of hydrogen ions. Therefore, a solution with a pH of 2 has a concentration of hydrogen ions 1000 times greater than a solution with a pH of 5 (10^-2 vs. 10^-5).