Is pH more than 14

Answer 1

Yes, acids with pH below 0 and bases with pH above 14 are called superacids and superbases, respectively. The actual pH scale is only 0-14, but some acids and bases fall outside of those bounds, since the scale is only for aqueous solutions (dissolved in water).

Previous answer does not understand the meaning of the term superacid, and pH is not defined as only 0-14. For example, the pH of concentrated HCl (12.1 M) that you would find in a chemical stockroom is -1.08. It is not a superacid, just highly concentrated. pH is commonly defined as -log ([H3O+]), and the output of this function has no limited range. Similarly, concentrated NaOH solution will have pH 15.25, but that does not make it a superbase.

At such large concentrations the accuracy of the above-stated method for deriving pH breaks down due to activity-coefficient variation. It would, in such a case, be more useful to use the Hammett Acidity Function to describe the acidity of such a solution. While the generalization that any acid outside the range of 0-14 is a superacid admittedly contains a Eulerian fallacy, it is within the realm of understanding of most basic IO Chem students. Perhaps, then, a better answer for the original question would simply be "Yes."

Answer 2

My friends, pH is defined as "The negative log of the Hydrogen ion [H+] concentration in a solution" Mathematically pH = -log[H+] Eq.1 As we know that water in a neutral solution and has a pH value of 7, so let me do the following calculations. At normal pace the number of ionized molecules in water is 1 x 10-7 the chemical equation for water ionization is H2O (ionizes into) H+ + OH- According to the ionization constant of ionization of water K = [H+][OH-]/[H2O] "[]" stands for concentration. Putting values we get, shifting [H2O] to the other side of equation K[H2O]=[1 x 10-7][1 x 10-7] Here, as the pH of water is 7, it means that the H+ and OH- concentration must be equal. As the number of water molecules remain constant therefore Kw=[10-7][10-7] "Kw" stands for ionization constant of water. Kw=10-14 Now if we put the value in the equation 1 Here, "pH" stands for conc. of H+ ions "pOH" stands for conc. of OH- ions. pH+pOH=-log[10-14] The answer comes as pH+pOH=14 as pH=pOH therefore, pH=7 pOH=7 adding these two pH+pOH=14 SummaryFrom the calculation above we came to the conclusion that pH scale cannot go beyond 14. If you liked this answer or for any comments pls contact mj_for_friends@Yahoo.com

Answer 3

Yes. It is rare, but you can have a pH lower than 1 (even negative), and higher than 14 (eg. 15)

Answer 4

I think impossible because of H+ given by water

Answer 5

The pH can be greater than 14 or lower than 0 in solutions with very high concentrations of [OH]- or [H]+.

Answer 6

no