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why the ph scale range is 1 t0 14 and why not beyond 14 and not to below 1?

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why the ph scale range is 1 t0 14 and why not beyond 14 and not to below 1?..

Beacuse the ionic Product of water At 25oC   1×10-14

please let me know if it is wrong

 Is This Answer Correct ? 6 Yes 1 No

why the ph scale range is 1 t0 14 and why not beyond 14 and not to below 1?..

We know that
H+ + OH- --> H2O
Equilibrium constant Kw is
[H+] [OH-] = Kw = 1*10^-14
By applying -log on both side
-log [OH-] - log [H+] = 14
We know that pH = -log [H+]
So pH = 14 - (-log [OH-])
From this eq that the higher the concentration of OH- ions, the lower the value of -log[OH-]. If the concentration of OH- ions reaches 1mol/dm3, the value of-log [OH-] is zero, which acc to eq gives pH 14.
If conc exceed from 1 ,-log [OH-] would be negative and pH is grater than 14.

 Is This Answer Correct ? 4 Yes 0 No

why the ph scale range is 1 t0 14 and why not beyond 14 and not to below 1?..

H2O dissociates in 7 H and 7 OH so max 14 and 7 neutral

 Is This Answer Correct ? 9 Yes 6 No

why the ph scale range is 1 t0 14 and why not beyond 14 and not to below 1?..

http://chemwiki.ucdavis.edu/Physical_Chemistry/Acids_and_Bases/Aqueous_Solutions/The_pH_Scale

 Is This Answer Correct ? 1 Yes 0 No

why the ph scale range is 1 t0 14 and why not beyond 14 and not to below 1?..

water dissociates in 7H,7OH so it would be max14 and 7 is neutral

 Is This Answer Correct ? 2 Yes 9 No

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