pH scale

[Aiden Metzner 2C]

Why is the pH scale from 0-14 if it can be negative and go beyond 14?

[Andrew Jang 4D]

I would assume that pH values of 0-14 are the most commonly found

[Heba Mengesha 3D]

I believe that the pH scale is not limited to 0-14, but most common solutions fall into this range.

[gabbymaraziti]

pH cannot be negative, which is why the formula for calculating pH is -log(H3O+).

[J Medina 2I]

Most solutions are in this range. Remember that pH is logarithmic so a pH of 15 would have a concentration of ions 10x greater than a solution with a pH of 14, which is not common.

[KDang_1D]

Solutions can fall outside the 0-14 range. Dr. Lavelle mentioned "superacids" which have a H3O+ concentration > 1x10^0 M and thus would have a negative pH. However, these are uncommon, especially in biological systems. I'm sure the same is true for bases.

[Veronica Lu 2H]

In most situations, pH ranges from 0-14

[SimranSangha4I]

The 0-14 primarily acts as a scale for most solutions.

[MBouwman_4A]

Most solutions fall between 0 and 14, there are very few acids that would be negative and very few bases that would fall above 14.

[Caroline Zepecki]

The pH scale definitely can not go negative because it is the factor 10 of H+ ions, so from a mathematical standpoint it would make no sense to have a negative concentration of H+ ions.

[DMuth_1J]

The 0-14 scale is most of the time all you will have to worry about, but don't be alarmed if your calculations give you a number slightly below 0 or slightly above 14. It is possible in extremely strong acids / bases, but is rare.

[305385703]

A scale from 1-14 is most common as others have said and it encompasses all solutions found in organic systems.

[Christineg1G]

The pH scale is most common between 0-14, but it is possible to go above or below 0 or 14. In the case of very acidic acids known as super acids, the pH scale goes below 0.