Download Aptitude Crack
img not found img not found

Water, pH and Macromolecules

Q1:

The dissociation constant of H2O at 25° C is

A 10-14 M

B 1014 M

C 10-7 M

D 107 M

ANS:A - 10-14 M

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.



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.