The pH scale runs from a low of what?

2 Answers
Jun 7, 2017

The pH scale runs from a low of 0 to 14.

Explanation:

pH zero would be 100% Hydrodium H_3^+O ions

The lowest number on the pH scale is the strongest acid.

Jun 7, 2017

pH doesn't have a "low," however, the minimum value on the scale is 0.

Explanation:

Typically pH falls somewhere between 0 and 14, however pH can be less than 0 or greater than 14. Keep in mind that pH=-log[H^+]. If, for example, you have 12M HCl solution, the [H^+]=12M, and pH=-log(12)=-1.08

Thus, there is no set minimum value of pH. Typically, however, 0≤pH≤14, so scientists created a scale, and on that scale the minimum value for pH is 0.