Biochemistry - Water, pH and Macromolecules - Discussion
Discussion Forum : Water, pH and Macromolecules - Section 1 (Q.No. 27)
27.
The dissociation constant of H2O at 25° C is
Discussion:
5 comments Page 1 of 1.
Ninoschka said:
8 years ago
The dissociation constant is the degree of dissociation of the ions of a molecule. In this case: H+ and OH-.
The Pure water is completely ionized. therefore, has a neutral pH. pH = -log[H+]
7 = -log [H+] therefore, [H+] = 10^-7M.
The Pure water is completely ionized. therefore, has a neutral pH. pH = -log[H+]
7 = -log [H+] therefore, [H+] = 10^-7M.
Mamta Joshi said:
8 years ago
The dissociation constant depend upon the temperature and pressure. The dissociation constant decreases as the temperature increases.
Acj said:
9 years ago
This would imply that water is VERY BASIC which it is not, the correct answer is C which indicates water is neutral (ph=7).
Selma said:
8 years ago
The Dissociation constant of water Kw = [H+][OH-] = 1 x 10-14.
ie., 10-7 x 10-7.
ie., 10-7 x 10-7.
SUNMATHY said:
8 years ago
I don't understand it. Please, Help me!
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