question???

Question

what can you say about the proportion of hydrogen ions and hydroxide ions in a solution that has a pH of 2???

Answer 1

Though pH is generally expressed without units, it is not an arbitrary scale; the number arises from a definition based on the activity of hydrogen ions in the solution. The pH scale is a reverse logarithmic representation of relative hydrogen proton (H+) concentration. Most scales are linear in nature and progress in a smooth incremental manner. On the pH scale, a shift up in value by one number represents a ten-fold decrease in value. For example, a shift in pH from 2 to 3 represents a decrease in total concentration of ten times less H+ concentration, and a shift from 2 to 4 represents a one-hundred (10 × 10)-fold decrease in H+ concentration.

A pH of 7 means an even number of H and OH ions in solution.
pH of 2 means I moved down the scale 5 points.
The explaination above says that means an increase of H+ ions by a factor of 1x10^5