Which statement best describes the difference between a substance with a pH of 3.0 and a substance with a pH of 6.0? (1 point)

Question

The substance with the lower pH has twice as many hydrogen ions per volume of water.

The substance with the higher pH has twice as many hydrogen ions per volume of water.

Ο The substance with the higher pH has 1,000 times as many hydrogen ions per volume of water.

The substance with the lower pH has 1,000 times as many hydrogen ions per volume of water.

Answer 1

The correct statement is:

The substance with the lower pH has 1,000 times as many hydrogen ions per volume of water.

This is because pH is a logarithmic scale, where each whole number change in pH represents a tenfold change in hydrogen ion concentration. Therefore, a difference of 3 units in pH (from 3.0 to 6.0) corresponds to a 10^3 or 1,000 times difference in hydrogen ion concentration.