The pH scale runs from a low of what?

2 Answers
David Drayer
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.

michael
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.

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